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You searched for subject:( traffic). Showing records 1 – 30 of 5292 total matches.
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1. Bacquet, Carlos. An Investigation of a Multi-Objective Genetic Algorithm applied to Encrypted Traffic Identification.
Degree: Master of Computer Science, Faculty of Computer Science, 2010, Dalhousie University
► This work explores the use of a Multi-Objective Genetic Algorithm (MOGA) for both, feature selection and cluster count optimization, for an unsupervised machine learning technique,… (more)
▼ This work explores the use of a Multi-Objective Genetic Algorithm (MOGA) for both, feature selection and cluster count optimization, for an unsupervised machine learning technique, K-Means, applied to encrypted traffic identification (SSH). The performance of the proposed model is benchmarked against other unsupervised learning techniques existing in the literature: Basic K-Means, semi-supervised K-Means, DBSCAN, and EM. Results show that the proposed MOGA, not only outperforms the other models, but also provides a good trade off in terms of detection rate, false positive rate, and time to build and run the model. A hierarchical version of the proposed model is also implemented, to observe the gains, if any, obtained by increasing cluster purity by means of a second layer of clusters. Results show that with the hierarchical MOGA, significant gains are observed in terms of the classification performances of the system. Advisors/Committee Members: Dr. Robert Beiko (external-examiner), Dr. Malcolm Heywood (graduate-coordinator), Professor Denis Riordan (thesis-reader), Professor Malcolm I. Heywood (thesis-reader), Professor Nur A. Zincir-Heywood (thesis-supervisor), Not Applicable (ethics-approval), Not Applicable (manuscripts), No (copyright-release).
Subjects/Keywords: Network Traffic Identification; Encrypted Traffic
Bacquet, C. (2010). An Investigation of a Multi-Objective Genetic Algorithm applied to Encrypted Traffic Identification . (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/13016
Bacquet, Carlos. "An Investigation of a Multi-Objective Genetic Algorithm applied to Encrypted Traffic Identification." 2010. Masters Thesis, Dalhousie University. Accessed January 22, 2020. http://hdl.handle.net/10222/13016.
Bacquet, Carlos. "An Investigation of a Multi-Objective Genetic Algorithm applied to Encrypted Traffic Identification." 2010. Web. 22 Jan 2020.
Bacquet C. An Investigation of a Multi-Objective Genetic Algorithm applied to Encrypted Traffic Identification. [Internet] [Masters thesis]. Dalhousie University; 2010. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/10222/13016.
Bacquet C. An Investigation of a Multi-Objective Genetic Algorithm applied to Encrypted Traffic Identification. [Masters Thesis]. Dalhousie University; 2010. Available from: http://hdl.handle.net/10222/13016
2. Zlatkovic, Milan. Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment.
► In recent years, traffic simulation software packages have become powerful tools in developing and studying the impacts of different traffic scenarios. This study presents a… (more)
▼ In recent years, traffic simulation software packages have become powerful tools in developing and studying the impacts of different traffic scenarios. This study presents a use of the VISSIM traffic simulation software in evaluating Transit Signal Priority (TSP) strategies using two types of emulated signal controllers: the Ring Barrier Controller (RBC) emulator, and the ASC/3 Software-in-the-Loop (SIL) traffic controller. The two signal control types were evaluated and compared for their abilities to provide TSP and the impacts it causes on the overall traffic. The results have shown benefits of the evaluated traffic controllers within VISSIM in simulating different TSP strategies, despite some differences and problems with controller settings. On the test-case network, the results have shown reductions in transit travel times from 4 to 7%, which are assigned to TSP. With combined Bus Rapid Transit (BRT) and TSP strategies, these travel time savings were in a range from 15 to 20%. Impacts on general purpose traffic along the main corridor were not observed, while TSP causes an increase in delays on side streets of approximately 1% and an increase in the number of stops of approximately 0.5%. The results also showed some differences in the way the two controller types implement TSP strategies.
Subjects/Keywords: Traffic flow; Traffic engineering
Zlatkovic, M. (2009). Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment . (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438
Zlatkovic, Milan. "Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment." 2009. Masters Thesis, University of Utah. Accessed January 22, 2020. http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438.
Zlatkovic, Milan. "Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment." 2009. Web. 22 Jan 2020.
Zlatkovic M. Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment. [Internet] [Masters thesis]. University of Utah; 2009. [cited 2020 Jan 22]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438.
Zlatkovic M. Evaluation of transit signal priority in RBC and ASC/3 software-in-the-loop simulation environment. [Masters Thesis]. University of Utah; 2009. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/143/rec/438
3. Lee, Yan-pui. A new approach to presenting congestion level alerts to road users.
Degree: MAin Transport Policy and, 2010, University of Hong Kong
URL: Lee, Y. [李昕鋇]. (2010). A new approach to presenting congestion level alerts to road users. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4654142  ; http://dx.doi.org/10.5353/th_b4654142  ; http://hdl.handle.net/10722/142032
published_or_final_version
Transport Policy and Planning
Master of Arts in Transport Policy and Planning
Subjects/Keywords: Traffic congestion.; Traffic flow.
Lee, Y. (2010). A new approach to presenting congestion level alerts to road users . (Masters Thesis). University of Hong Kong. Retrieved from Lee, Y. [李昕鋇]. (2010). A new approach to presenting congestion level alerts to road users. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4654142 ; http://dx.doi.org/10.5353/th_b4654142 ; http://hdl.handle.net/10722/142032
Lee, Yan-pui. "A new approach to presenting congestion level alerts to road users." 2010. Masters Thesis, University of Hong Kong. Accessed January 22, 2020. Lee, Y. [李昕鋇]. (2010). A new approach to presenting congestion level alerts to road users. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4654142 ; http://dx.doi.org/10.5353/th_b4654142 ; http://hdl.handle.net/10722/142032.
Lee, Yan-pui. "A new approach to presenting congestion level alerts to road users." 2010. Web. 22 Jan 2020.
Lee Y. A new approach to presenting congestion level alerts to road users. [Internet] [Masters thesis]. University of Hong Kong; 2010. [cited 2020 Jan 22]. Available from: Lee, Y. [李昕鋇]. (2010). A new approach to presenting congestion level alerts to road users. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4654142 ; http://dx.doi.org/10.5353/th_b4654142 ; http://hdl.handle.net/10722/142032.
Lee Y. A new approach to presenting congestion level alerts to road users. [Masters Thesis]. University of Hong Kong; 2010. Available from: Lee, Y. [李昕鋇]. (2010). A new approach to presenting congestion level alerts to road users. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4654142 ; http://dx.doi.org/10.5353/th_b4654142 ; http://hdl.handle.net/10722/142032
4. Olfert, Caleb. Analysis and evaluation of methods for adjusting pedestrian counts: Analyzing Adjustment Methods to Estimate Average Annual Daily Pedestrian Traffic in Downtown Winnipeg.
► Traffic monitoring efforts to date have focussed primarily on motorized travel. As more jurisdictions prioritize active transportation, addressing the need for network-level pedestrian data through… (more)
▼ Traffic monitoring efforts to date have focussed primarily on motorized travel. As more jurisdictions prioritize active transportation, addressing the need for network-level pedestrian data through system-wide traffic monitoring programs is essential to optimize engineering decisions. The purpose of this research was to evaluate methods to better leverage pedestrian count data for cities to estimate annual pedestrian traffic statistics. Using data from eight automated pedestrian counters, this research validated previously established traffic pattern groups in downtown Winnipeg while analyzing and evaluating adjustment methods to estimate annual statistics from short-duration counts. Pedestrian traffic data was collected throughout 2016. Using this continuous dataset, two traffic pattern groups initially developed using short-duration count data were updated. Results indicate that in Winnipeg's downtown area, the day-of-year factor method for adjusting short-duration counts produces the most precise estimates of annual average daily pedestrian traffic (AADPT), with mean absolute percent error ranging from 19% to 16% for single day and two week counts respectively. Also that adjustment methods using partial day counts produce approximately twice as much error on average than multi-day counts. Additionally, counts beyond three days in duration do not significantly improve the precision of any multiday adjustment method's estimate of AADPT. Finally, this research highlighted the presence of two additional pedestrian traffic peak periods often ignored by traditional pedestrian traffic data collection methods, these being the noon peak (11:00-13:00) and the evening event peak (21:00-23:00). Advisors/Committee Members: Montufar, Jeannette (Civil Engineering) (supervisor), Regehr, Jonathan (Civil Engineering).
Subjects/Keywords: Pedestrian; Traffic; Traffic Monitoring
Olfert, C. (2017). Analysis and evaluation of methods for adjusting pedestrian counts: Analyzing Adjustment Methods to Estimate Average Annual Daily Pedestrian Traffic in Downtown Winnipeg . (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/32861
Olfert, Caleb. "Analysis and evaluation of methods for adjusting pedestrian counts: Analyzing Adjustment Methods to Estimate Average Annual Daily Pedestrian Traffic in Downtown Winnipeg." 2017. Masters Thesis, University of Manitoba. Accessed January 22, 2020. http://hdl.handle.net/1993/32861.
Olfert, Caleb. "Analysis and evaluation of methods for adjusting pedestrian counts: Analyzing Adjustment Methods to Estimate Average Annual Daily Pedestrian Traffic in Downtown Winnipeg." 2017. Web. 22 Jan 2020.
Olfert C. Analysis and evaluation of methods for adjusting pedestrian counts: Analyzing Adjustment Methods to Estimate Average Annual Daily Pedestrian Traffic in Downtown Winnipeg. [Internet] [Masters thesis]. University of Manitoba; 2017. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/1993/32861.
Olfert C. Analysis and evaluation of methods for adjusting pedestrian counts: Analyzing Adjustment Methods to Estimate Average Annual Daily Pedestrian Traffic in Downtown Winnipeg. [Masters Thesis]. University of Manitoba; 2017. Available from: http://hdl.handle.net/1993/32861
5. Glasgow, Morgan. Analysis of pedestrian traffic along a commercial district corridor.
► Pedestrian traffic monitoring is in its infancy, and the volatility of pedestrian traffic creates a need for guidance on site selection in traffic monitoring programs.… (more)
▼ Pedestrian traffic monitoring is in its infancy, and the volatility of pedestrian traffic creates a need for guidance on site selection in traffic monitoring programs. A robust knowledge base surrounding pedestrian traffic patterns and the degree to which a single counting station is representative of a larger area are essential in developing an accurate program for estimating pedestrian traffic volumes. This research analysed long term hourly data from automated pedestrian counting devices on four consecutive blocks along an entertainment area corridor to determine the shifts in temporal pedestrian traffic characteristics and volumes along a corridor. Features of the built environment were identified that can aid in estimating pedestrian traffic patterns along a corridor. Results indicate daily pedestrian traffic volumes can vary significantly between consecutive city blocks, limiting the applicability of a single count location to represent a larger area. Additionally, shifts in temporal traffic patterns occur over short distances. Advisors/Committee Members: Montufar, Jeannette (Civil Engineering) (supervisor), Regehr, Jonathan (Civil Engineering) Peng, Qingjin (Mechanical Engineering) (examiningcommittee).
Subjects/Keywords: Pedestrian; Traffic pattern; Traffic monitoring
Glasgow, M. (2016). Analysis of pedestrian traffic along a commercial district corridor . (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/31218
Glasgow, Morgan. "Analysis of pedestrian traffic along a commercial district corridor." 2016. Masters Thesis, University of Manitoba. Accessed January 22, 2020. http://hdl.handle.net/1993/31218.
Glasgow, Morgan. "Analysis of pedestrian traffic along a commercial district corridor." 2016. Web. 22 Jan 2020.
Glasgow M. Analysis of pedestrian traffic along a commercial district corridor. [Internet] [Masters thesis]. University of Manitoba; 2016. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/1993/31218.
Glasgow M. Analysis of pedestrian traffic along a commercial district corridor. [Masters Thesis]. University of Manitoba; 2016. Available from: http://hdl.handle.net/1993/31218
6. Day, Madeleine. Using Map Matching for an Online Traffic Congestion Application.
Degree: 2010, University of Edinburgh
► Optimising the flow of traffic on road networks can be achieved through sharing information about congestion events to road users. Using GPS sensors to track… (more)
▼ Optimising the flow of traffic on road networks can be achieved through sharing information about congestion events to road users. Using GPS sensors to track vehicle movements can provide information to monitor speeds and give an indication of where traffic delays are occurring. While GPS can give location estimate at a fine granularity, GPS readings also have a certain amount of positional error. This research successfully implemented a map matching algorithm to increase the accuracy of GPS data and position vehicles directly onto correct road links. These positions were used to estimate average speed of vehicles which was used as a proxy for road network performance. Areas that were experiencing speeds under the speed limit were considered to be congested. This information was presented on a user friendly and highly accessible web map. A small area in London and sample vehicle trajectories provided a way of testing and evaluating these concepts. Advisors/Committee Members: Mackaness, William.
Subjects/Keywords: Traffic; Map
Day, M. (2010). Using Map Matching for an Online Traffic Congestion Application . (Thesis). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/3739
Day, Madeleine. "Using Map Matching for an Online Traffic Congestion Application." 2010. Thesis, University of Edinburgh. Accessed January 22, 2020. http://hdl.handle.net/1842/3739.
Day, Madeleine. "Using Map Matching for an Online Traffic Congestion Application." 2010. Web. 22 Jan 2020.
Day M. Using Map Matching for an Online Traffic Congestion Application. [Internet] [Thesis]. University of Edinburgh; 2010. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/1842/3739.
Day M. Using Map Matching for an Online Traffic Congestion Application. [Thesis]. University of Edinburgh; 2010. Available from: http://hdl.handle.net/1842/3739
7. Lam, Yat-wai. Traffic safety and exposure.
URL: Lam, Y. [林日威]. (2009). Traffic safety and exposure. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4378563  ; http://dx.doi.org/10.5353/th_b4378563  ; http://hdl.handle.net/10722/57686
Subjects/Keywords: Traffic safety.
Lam, Y. (2009). Traffic safety and exposure . (Masters Thesis). University of Hong Kong. Retrieved from Lam, Y. [林日威]. (2009). Traffic safety and exposure. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4378563 ; http://dx.doi.org/10.5353/th_b4378563 ; http://hdl.handle.net/10722/57686
Lam, Yat-wai. "Traffic safety and exposure." 2009. Masters Thesis, University of Hong Kong. Accessed January 22, 2020. Lam, Y. [林日威]. (2009). Traffic safety and exposure. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4378563 ; http://dx.doi.org/10.5353/th_b4378563 ; http://hdl.handle.net/10722/57686.
Lam, Yat-wai. "Traffic safety and exposure." 2009. Web. 22 Jan 2020.
Lam Y. Traffic safety and exposure. [Internet] [Masters thesis]. University of Hong Kong; 2009. [cited 2020 Jan 22]. Available from: Lam, Y. [林日威]. (2009). Traffic safety and exposure. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4378563 ; http://dx.doi.org/10.5353/th_b4378563 ; http://hdl.handle.net/10722/57686.
Lam Y. Traffic safety and exposure. [Masters Thesis]. University of Hong Kong; 2009. Available from: Lam, Y. [林日威]. (2009). Traffic safety and exposure. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4378563 ; http://dx.doi.org/10.5353/th_b4378563 ; http://hdl.handle.net/10722/57686
8. Harline, Carl Eric. The Impact of Traffic Images on Mode Choice in Stated-Preference Surveys.
Degree: 2013, Texas Digital Library
URL: http://hdl.handle.net/1969;  http://hdl.handle.net/2249.1/66593
► A difficult aspect of using stated-preference choice experiments to predict travel behavior is properly presenting attributes and characteristics of hypothetical trips to respondents. With the… (more)
▼ A difficult aspect of using stated-preference choice experiments to predict travel behavior is properly presenting attributes and characteristics of hypothetical trips to respondents. With the growing in number of transportation choices recently, the task of concisely and accurately communicating trip attributes in the stated-preference setting become increasingly more important. Recent attempts to introduce innovative strategies to the stated-preference setting have yielded techniques to more efficiently summarize trip attributes to respondents. One technique is to use images of traffic conditions as a supplemental means of summarizing average trip speed, travel time reliability, or degree of congestion. However, little research has been performed testing the effect that the use of traffic images has on models of mode choice built from this kind of stated-preference data. In this research, a stated-preference setting was developed in which the influence that images of traffic conditions was measured. Pictures of traffic conditions that correlated to average trip speed were either shown or withheld depending on random assignment to a survey population from Austin, Texas. From the significant differences in respondent preferences across mode choice, a mixed-logit model was built to describe the respondent's choice behavior. Overall model parameters discovered no evidence to support the assertion that traffic image presentation has a statistically significant effect on mode choice with respect to Value of Travel Time Savings, or Value of Travel Time Reliability. Advisors/Committee Members: Burris, Mark W (advisor).
Subjects/Keywords: traffic images
Harline, C. E. (2013). The Impact of Traffic Images on Mode Choice in Stated-Preference Surveys . (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66593
Harline, Carl Eric. "The Impact of Traffic Images on Mode Choice in Stated-Preference Surveys." 2013. Thesis, Texas Digital Library. Accessed January 22, 2020. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66593.
Harline, Carl Eric. "The Impact of Traffic Images on Mode Choice in Stated-Preference Surveys." 2013. Web. 22 Jan 2020.
Harline CE. The Impact of Traffic Images on Mode Choice in Stated-Preference Surveys. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66593.
Harline CE. The Impact of Traffic Images on Mode Choice in Stated-Preference Surveys. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66593
University of Illinois – Urbana-Champaign
9. Rhoades, Christine M. A technique to calibrate nonlinear car-following laws for traffic oscillation estimation.
Degree: MS, Civil Engineering, 2015, University of Illinois – Urbana-Champaign
► Traffic congestion is one of the chief transportation problems in the world today. The total cost of transportation congestion in the United States in 2011… (more)
▼ Traffic congestion is one of the chief transportation problems in the world today. The total cost of transportation congestion in the United States in 2011 was estimated at 121 billion dollars. Congested traffic rarely flows smoothly; instead, traffic goes through cyclical slow and fast movements that result in what is commonly known as traffic oscillations. There are numerous negative effects associated with these oscillations, including extra fuel consumption and greenhouse gas emissions. Therefore, transportation professionals would like to find a way to reduce traffic oscillations. Hence, researchers have developed numerous models to help reproduce traffic oscillations, in the hopes of better understanding how oscillations form and propagate through a platoon of vehicles. Many simulation and experimental studies have been performed to study oscillations, but as data collection technologies have improved, they have provided the opportunity to study oscillations as they occur in the real world. By calibrating the parameters of the theoretical models with empirical data, it is possible to more accurately reproduce driver behavior in oscillations and consequently to evaluate the impacts of various potential traffic control strategies on traffic oscillations. This thesis proposes a calibration technique that is useful in calibrating nonlinear car-following laws to accurately model traffic oscillations from field trajectory data in both the time domain and the frequency domain. The base of the technique is maximum likelihood estimation, as calculated using the speed-spacing diagram. Time-domain and frequency-domain feedback is then added to this base to achieve accuracy in both domains. Numerical examples using NGSIM data (Next Generation SIMulation) are provided to verify the proposed method. Further analysis of the model parameters and potential traffic control strategies to mitigate the traffic oscillation problem are then discussed.
Subjects/Keywords: traffic oscillation
Rhoades, C. M. (2015). A technique to calibrate nonlinear car-following laws for traffic oscillation estimation . (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/78678
Rhoades, Christine M. "A technique to calibrate nonlinear car-following laws for traffic oscillation estimation." 2015. Thesis, University of Illinois – Urbana-Champaign. Accessed January 22, 2020. http://hdl.handle.net/2142/78678.
Rhoades, Christine M. "A technique to calibrate nonlinear car-following laws for traffic oscillation estimation." 2015. Web. 22 Jan 2020.
Rhoades CM. A technique to calibrate nonlinear car-following laws for traffic oscillation estimation. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2015. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/2142/78678.
Rhoades CM. A technique to calibrate nonlinear car-following laws for traffic oscillation estimation. [Thesis]. University of Illinois – Urbana-Champaign; 2015. Available from: http://hdl.handle.net/2142/78678
10. Parry, Katharina. Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy .
► There are two facets that are important in providing reliable forecasts from observed traffi c data. The first is that the model used should describe… (more)
▼ There are two facets that are important in providing reliable forecasts from observed traffi c data. The first is that the model used should describe and represent as many characteristics of the system as possible. The second is that the estimates of the model parameters need to be accurate. We begin with improved methods of statistical inference for various types of models and using various types of data; and then move onto the development of new models that describe the day-to-day dynamics of traffic systems. Calibration of transport models for traffic systems gives rise to a variety of statistical inference problems, such as estimation of travel demand parameters. Once the ways in which vehicles move through the network are known, statistical inference becomes straightforward, however, at present, the data available are predominantly vehicle counts from a set of links in the network. The fundamental problem is that these vehicle counts do not uniquely determine the route ows, as there are a large number of possible route ows that could have led to a given set of observed link counts. A solution to this problem is to simulate the latent route ows conditional on the observed link counts in a Markov Chain Monte Carlo sampling algorithm. This is challenging because the set of feasible route ows will typically be far too large to enumerate in practice, meaning that we must simulate from a set that we cannot fully specify. An innovative piece of work here was the extension of an existing sampling methodology that works only for linear networks to be applicable for tree networks. In simulation studies where we use the sample to estimate average route ows, we show that our method provides more reliable estimates than generalised least squares methods. This is to be expected given that our method exploits information available via second order properties of the link counts. We provide another demonstration of how this generalised sampler can be applied whenever the need to sample from the set of latent route ows is pivotal for making statistical inference. We use the sampler to estimate travel demand parameters for day-to-day dynamic process models, an important class of model where the data has been collected on successive days and hence allows for inference using the evolution of the traffic flows over time. A new type of data, route flows from tracked vehicles, is becoming increasingly available through emerging technologies. Our contribution was to develop a statistical likelihood model that incorporates this routing information into currently used link-count data only models. We derive some tractable normal approximations thereof and perform likelihood-based inference for these normal models under the assumption that the probability of vehicle tracking is known. In our analysis we find that the likelihood shows irregular behaviour due to boundary effects, and provide conditions under which such behaviour will be observed. For regular cases we outline…
Subjects/Keywords: Traffic flow; Traffic systems; Traffic networks; Traffic network modelling
Parry, K. (2012). Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy . (Thesis). Massey University. Retrieved from http://hdl.handle.net/10179/4259
Parry, Katharina. "Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy ." 2012. Thesis, Massey University. Accessed January 22, 2020. http://hdl.handle.net/10179/4259.
Parry, Katharina. "Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy ." 2012. Web. 22 Jan 2020.
Parry K. Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy . [Internet] [Thesis]. Massey University; 2012. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/10179/4259.
Parry K. Statistical modelling and inference for traffic networks : a thesis submitted for the degree of Doctor of Philosophy . [Thesis]. Massey University; 2012. Available from: http://hdl.handle.net/10179/4259
11. Zuurbier, F.S. Intelligent Route Guidance.
Degree: 2010, TRAIL
URL: http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f  ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f
► The dissertation research deals with the design of the controller for a Dynamic Route Guidance System (DRGS) that uses both road side variable message signs… (more)
▼ The dissertation research deals with the design of the controller for a Dynamic Route Guidance System (DRGS) that uses both road side variable message signs as well as in car personal navigation devices. The DRGS is able to determine user- and system optimal route guidance advices in real-time for realistic networks using a model predictive control approach. A case study is performed for the traffic network of Rotterdam where the benefit of this kind of route guidance to reduce total delay are illustrated. Advisors/Committee Members: Hoogendoorn, S.P..
Subjects/Keywords: traffic
Zuurbier, F. S. (2010). Intelligent Route Guidance . (Doctoral Dissertation). TRAIL. Retrieved from http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f
Zuurbier, F S. "Intelligent Route Guidance." 2010. Doctoral Dissertation, TRAIL. Accessed January 22, 2020. http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f.
Zuurbier, F S. "Intelligent Route Guidance." 2010. Web. 22 Jan 2020.
Zuurbier FS. Intelligent Route Guidance. [Internet] [Doctoral dissertation]. TRAIL; 2010. [cited 2020 Jan 22]. Available from: http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f.
Zuurbier FS. Intelligent Route Guidance. [Doctoral Dissertation]. TRAIL; 2010. Available from: http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; urn:NBN:nl:ui:24-uuid:48cbb567-d236-496b-b25f-bea42dd5c63f ; http://resolver.tudelft.nl/uuid:48cbb567-d236-496b-b25f-bea42dd5c63f
12. Mohammed, Abdulnasim Idris. Road traffic accidents in Nigeria: causes, impacts and interventions .
Degree: DE – Népegészségügyi Kar, 2014, University of Debrecen
► According to the World Health Organization Nearly 3,400 people die on the world's roads every day. Tens of millions of people are injured or disabled… (more)
▼ According to the World Health Organization Nearly 3,400 people die on the world's roads every day. Tens of millions of people are injured or disabled every year. Children, pedestrians, cyclists and the elderly are among the most vulnerable of road users with developing countries suffering more to these problems This Thesis is concerned with traffic accidents and safety in Nigeria. It focuses on the fundamentals, trends in of road traffic accidents, the impacts on the road traffic accidents, the possible causes, possible intervention and prevention schemes. As this thesis a thorough literature review, the materials and methods includes literatures from PubMed, informations from the WHO date base, informations from other relevant health sites like CDC, and news on webs for the situation. It should be noted that statistics are very conservative and based on estimation as it is very difficult to really get very accurate statistics about the case in Nigeria due to poor records management and inefficiency to get through rural areas. Accident records and descriptions of current safety measures obtained from such relevant agencies as the Federal Road Safety Corps who are the solely responsible for road safety matters in Nigeria, The Nigeria Police and Department of Road Transport Services, also with maps and photographs provided the basic data for the study. The results shown various factors that by and large the driver is the main cause of the high rates accidents that happen in Nigeria, the functional limitations of FRSC as the top body responsible for road safety matters, the inefficiency in sufficient proper manner of implementing the driver license and Vehicle registration schemes. Also the poor driving culture of Nigerians which arises from factors like weak traffic education, public awareness and enforcement programs, as well as contribution from environmental factors. Restructuring and re-orienting of the lead agency, in taking road safety management as something imperative and also declaring traffic accidents as a severe national health problems would go a long way in making the roads in Nigeria more bearable and safer. The government implementation of policies and measures would also improve the safe surveillance in Nigeria. Advisors/Committee Members: Nagy, Attila (advisor), Debreceni Egyetem::Népegészségügyi Kar (advisor).
Subjects/Keywords: traffic; accident
Mohammed, A. I. (2014). Road traffic accidents in Nigeria: causes, impacts and interventions . (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/193830
Mohammed, Abdulnasim Idris. "Road traffic accidents in Nigeria: causes, impacts and interventions ." 2014. Thesis, University of Debrecen. Accessed January 22, 2020. http://hdl.handle.net/2437/193830.
Mohammed, Abdulnasim Idris. "Road traffic accidents in Nigeria: causes, impacts and interventions ." 2014. Web. 22 Jan 2020.
Mohammed AI. Road traffic accidents in Nigeria: causes, impacts and interventions . [Internet] [Thesis]. University of Debrecen; 2014. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/2437/193830.
Mohammed AI. Road traffic accidents in Nigeria: causes, impacts and interventions . [Thesis]. University of Debrecen; 2014. Available from: http://hdl.handle.net/2437/193830
California State Polytechnic University – Pomona
13. Ho, Tiffany. Dynamical Model and Numerical Simulation of Traffic Congestion.
Degree: MS, Mathematics, 2014, California State Polytechnic University – Pomona
URL: http://hdl.handle.net/10211.3/123901
► We will look at the dynamics of tra c congestion that is formed without any specifc origin. This type of event can be viewed in… (more)
▼ We will look at the dynamics of tra c congestion that is formed without any specifc origin. This type of event can be viewed in metropolitan areas daily as highway traffic jams. We assume that these tra c congestions are formed from small disturbances in the flow of traffic. This will be modelled using a dynamical system where each differential equation represents a vehicle's behaviour. We will utilize Matlab's built-in numerical integration function ode45 which uses Runge-Kutta integration methods. Through our simulations, we are able to determine that with the addition of small perturbations to an equation in the steady-state flow solution, we will induce traffic congestion. Advisors/Committee Members: Szypowski, Ryan (advisor).
Subjects/Keywords: traffic congestion
Ho, T. (2014). Dynamical Model and Numerical Simulation of Traffic Congestion . (Masters Thesis). California State Polytechnic University – Pomona. Retrieved from http://hdl.handle.net/10211.3/123901
Ho, Tiffany. "Dynamical Model and Numerical Simulation of Traffic Congestion." 2014. Masters Thesis, California State Polytechnic University – Pomona. Accessed January 22, 2020. http://hdl.handle.net/10211.3/123901.
Ho, Tiffany. "Dynamical Model and Numerical Simulation of Traffic Congestion." 2014. Web. 22 Jan 2020.
Ho T. Dynamical Model and Numerical Simulation of Traffic Congestion. [Internet] [Masters thesis]. California State Polytechnic University – Pomona; 2014. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/10211.3/123901.
Ho T. Dynamical Model and Numerical Simulation of Traffic Congestion. [Masters Thesis]. California State Polytechnic University – Pomona; 2014. Available from: http://hdl.handle.net/10211.3/123901
14. Hernandez, Henry. Temporal variations for monitoring traffic in urban areas.
► The research designs, develops, and applies a methodology to characterize hourly traffic variations in urban areas. The research documents current traffic monitoring practices in urban… (more)
▼ The research designs, develops, and applies a methodology to characterize hourly traffic variations in urban areas. The research documents current traffic monitoring practices in urban areas and assesses the need to understand hourly variations using the city of Winnipeg, Manitoba as a case study. The methodology applied to develop temporal variations for traffic patterns in urban areas uses a hybrid approach that compares the results from the statistical analysis with variables that explain hourly temporal variations, including road class, traffic volume, and land use. The research specifically identifies: arterial and non-arterial roads, low and high volume roads, and residential, industrial, and commercial zones as variables that explain hourly temporal variations. Six traffic pattern groups in Winnipeg are developed and characterized based on this approach. These variables are used to develop decision flow charts to assign road segments to TPGs. Advisors/Committee Members: Montufar, Jeannette (Civil Engineering) Regehr, Jonathan (Civil Engineering) (supervisor), Oleszkiewicz, Jan (Civil Engineering) McNeill, Dean (Electrical & Computer Engineering) (examiningcommittee).
Subjects/Keywords: Traffic; Transportation
Hernandez, H. (2012). Temporal variations for monitoring traffic in urban areas . (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/12344
Hernandez, Henry. "Temporal variations for monitoring traffic in urban areas." 2012. Masters Thesis, University of Manitoba. Accessed January 22, 2020. http://hdl.handle.net/1993/12344.
Hernandez, Henry. "Temporal variations for monitoring traffic in urban areas." 2012. Web. 22 Jan 2020.
Hernandez H. Temporal variations for monitoring traffic in urban areas. [Internet] [Masters thesis]. University of Manitoba; 2012. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/1993/12344.
Hernandez H. Temporal variations for monitoring traffic in urban areas. [Masters Thesis]. University of Manitoba; 2012. Available from: http://hdl.handle.net/1993/12344
15. Gietelink, O.J. Design and validation of advanced driver assistance systems.
URL: http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc  ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:isbn:90-5584-091-5 ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc
Gietelink, O. J. (2007). Design and validation of advanced driver assistance systems . (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:isbn:90-5584-091-5 ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc
Gietelink, O J. "Design and validation of advanced driver assistance systems." 2007. Doctoral Dissertation, Delft University of Technology. Accessed January 22, 2020. http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:isbn:90-5584-091-5 ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc.
Gietelink, O J. "Design and validation of advanced driver assistance systems." 2007. Web. 22 Jan 2020.
Gietelink OJ. Design and validation of advanced driver assistance systems. [Internet] [Doctoral dissertation]. Delft University of Technology; 2007. [cited 2020 Jan 22]. Available from: http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:isbn:90-5584-091-5 ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc.
Gietelink OJ. Design and validation of advanced driver assistance systems. [Doctoral Dissertation]. Delft University of Technology; 2007. Available from: http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; urn:isbn:90-5584-091-5 ; urn:NBN:nl:ui:24-uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc ; http://resolver.tudelft.nl/uuid:7326d468-174d-4576-a5d8-b2cd136dd5fc
16. Güttinger, V.A. Met het oog op hun veiligheid : het ontwikkelen van een konfliktsobservatietechniek ter beoordeling van de verkeersveiligheid van woongebieden voor kinderen. Dissertatie Universiteit van Amsterdam 5 september 1980.
URL: http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4  ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4
Güttinger, V. A. (1980). Met het oog op hun veiligheid : het ontwikkelen van een konfliktsobservatietechniek ter beoordeling van de verkeersveiligheid van woongebieden voor kinderen. Dissertatie Universiteit van Amsterdam 5 september 1980. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4
Güttinger, V A. "Met het oog op hun veiligheid : het ontwikkelen van een konfliktsobservatietechniek ter beoordeling van de verkeersveiligheid van woongebieden voor kinderen. Dissertatie Universiteit van Amsterdam 5 september 1980." 1980. Doctoral Dissertation, Delft University of Technology. Accessed January 22, 2020. http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4.
Güttinger, V A. "Met het oog op hun veiligheid : het ontwikkelen van een konfliktsobservatietechniek ter beoordeling van de verkeersveiligheid van woongebieden voor kinderen. Dissertatie Universiteit van Amsterdam 5 september 1980." 1980. Web. 22 Jan 2020.
Güttinger VA. Met het oog op hun veiligheid : het ontwikkelen van een konfliktsobservatietechniek ter beoordeling van de verkeersveiligheid van woongebieden voor kinderen. Dissertatie Universiteit van Amsterdam 5 september 1980. [Internet] [Doctoral dissertation]. Delft University of Technology; 1980. [cited 2020 Jan 22]. Available from: http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4.
Güttinger VA. Met het oog op hun veiligheid : het ontwikkelen van een konfliktsobservatietechniek ter beoordeling van de verkeersveiligheid van woongebieden voor kinderen. Dissertatie Universiteit van Amsterdam 5 september 1980. [Doctoral Dissertation]. Delft University of Technology; 1980. Available from: http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; urn:NBN:nl:ui:24-uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4 ; http://resolver.tudelft.nl/uuid:8de81bfa-46e6-403d-a7fa-a6ea95cb8ab4
17. Figueroa, Marcelo, 1984-. Transportation systems reliability analysis: modeling traffic subject to incidents applying queueing theory.
Degree: PhD, Industrial and Systems Engineering, 2018, Rutgers University
URL: https://rucore.libraries.rutgers.edu/rutgers-lib/59085/
This dissertation investigates different aspects of the reliability of a transportation system subject to random events by means of applied queueing theory. We use queueing… (more)
This dissertation investigates different aspects of the reliability of a transportation system subject to random events by means of applied queueing theory. We use queueing models and fundamental principles of stochastic analysis, to shine light on the behavior and properties of a traffic system that is subject to random deteriorations of the quality of service as indicated by vehicular travel time. For this, we discuss stationary and transient analytical solutions for the number of customers and service-time distributions of Markov-modulated service rates queues. We also study analytically the effect that different random components of the system have in the completion time of a single trip. We are able to give closed form solutions to accommodate a number of different combinations of random variables as inputs of the system, as well as to give analytical insights on the asymptotic behavior when abnormally slow customers show up. We validate and calibrate the analytical models using incident reports and weather conditions as sources of traffic deterioration. We generate measures of the performance of the system with explicit dependencies on traffic and incident parameters, avoiding the use of costly simulation. We make use of these measures for optimizing risk-averse route choice problems. We expect our models contribute to the design and operation of management tools for roadway traffic and incident mitigation that can lead to safer and more efficient movement of people, goods, and other resources.
Advisors/Committee Members: Baykal-Gürsoy, Melike (chair), Albin, Susan L (internal member), Coit, David W (internal member), Ozel, Tugrul (internal member), Özel, Tugrul (internal member), Jin, Peter J (outside member), School of Graduate Studies.
Subjects/Keywords: Traffic engineering
Figueroa, Marcelo, 1. (2018). Transportation systems reliability analysis: modeling traffic subject to incidents applying queueing theory . (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/59085/
Figueroa, Marcelo, 1984-. "Transportation systems reliability analysis: modeling traffic subject to incidents applying queueing theory." 2018. Doctoral Dissertation, Rutgers University. Accessed January 22, 2020. https://rucore.libraries.rutgers.edu/rutgers-lib/59085/.
Figueroa, Marcelo, 1984-. "Transportation systems reliability analysis: modeling traffic subject to incidents applying queueing theory." 2018. Web. 22 Jan 2020.
Figueroa, Marcelo 1. Transportation systems reliability analysis: modeling traffic subject to incidents applying queueing theory. [Internet] [Doctoral dissertation]. Rutgers University; 2018. [cited 2020 Jan 22]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/59085/.
Figueroa, Marcelo 1. Transportation systems reliability analysis: modeling traffic subject to incidents applying queueing theory. [Doctoral Dissertation]. Rutgers University; 2018. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/59085/
18. Zhou, Yian. Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems.
Degree: PhD, Computer Engineering - Computer and Information Science and Engineering, 2015, University of Florida
► Traffic volume measurement is critical in transportation engineering and vehicular networks. Existing research on traffic volume measurement mainly focuses on single-point traffic statistics. In this… (more)
▼ Traffic volume measurement is critical in transportation engineering and vehicular networks. Existing research on traffic volume measurement mainly focuses on single-point traffic statistics. In this dissertation, we switch our view from single-point to multi-point, and study the important problem of privacy-preserving multi-point traffic volume measurement in intelligent cyber-physical road systems (CPRS), which complements the state of art. The objective is to allow transportation authorities to automatically collect and efficiently measure the aggregate multi-point traffic volume data from CPRS without learning information about individual vehicles. Advisors/Committee Members: CHEN,SHIGANG (committee chair), PEIR,JIHKWON (committee member), XIA,YE (committee member), FANG,YUGUANG (committee member).
Subjects/Keywords: Bitmapped images; Estimators; Motor vehicle traffic; Simulations; Traffic estimation; Traffic flow; Traffic measurement; Traffic volume; Transportation; Vehicles; measurement – privacy – traffic – vehicle
Zhou, Y. (2015). Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems . (Doctoral Dissertation). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0049549
Zhou, Yian. "Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems." 2015. Doctoral Dissertation, University of Florida. Accessed January 22, 2020. http://ufdc.ufl.edu/UFE0049549.
Zhou, Yian. "Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems." 2015. Web. 22 Jan 2020.
Zhou Y. Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2020 Jan 22]. Available from: http://ufdc.ufl.edu/UFE0049549.
Zhou Y. Privacy-Preserving Transportation Traffic Measurement in Intelligent Cyber-Physical Road Systems. [Doctoral Dissertation]. University of Florida; 2015. Available from: http://ufdc.ufl.edu/UFE0049549
19. Ilvesmäki, Mika. On Traffic Classification and its Applications in the Internet.
Degree: 2005, Helsinki University of Technology
URL: http://lib.tkk.fi/Diss/2005/isbn9512276925/
In this work, the methods and applications of traffic classification in the Internet are examined in detail. First, we define and discuss the conceptual environment… (more)
In this work, the methods and applications of traffic classification in the Internet are examined in detail. First, we define and discuss the conceptual environment of traffic classification. We then discuss the performance issues of traffic classification and define a method of visualization to compare the performance of traffic classification implementations. Previously introduced methods of traffic classification: the static applications, the packet count and the list classifiers are compared with each other. We find these methods to perform quite well when analyzed as performing in an IP router, but to be rather ambiguous as to the effect they cause to the user. We introduce an implementation of dynamic traffic classification to two classes using learning vector quantization (LVQ) for flow analysis data and find it to perform well in a simulated environment using flow analysis made on traffic measurements. In comparison to the previous methods of traffic classification, we see that the LVQ classifier has adequate performance. We also study a method of traffic classification using consecutive flow analysis with varying values of the parameters of the flow and find that we are able to classify traffic to 2 or 3 different classes. Within the classes the applications are similar in measured behavior and thus may provide help in realizing some advanced Internet service architectures. Finally, we also observe the application of the dynamic classifier in an Internet router and in the Internet itself. We argue that the implementation of the dynamic classification method is feasible in the network.
Report / Helsinki University of Technoloy, Networking Laboratory, ISSN 1458-0322; 3/2005
Advisors/Committee Members: Helsinki University of Technology, Department of Electrical and Communications Engineering, Networking laboratory.
Subjects/Keywords: traffic measurements; traffic classification; Internet; neural networks
Ilvesmäki, M. (2005). On Traffic Classification and its Applications in the Internet . (Thesis). Helsinki University of Technology. Retrieved from http://lib.tkk.fi/Diss/2005/isbn9512276925/
Ilvesmäki, Mika. "On Traffic Classification and its Applications in the Internet." 2005. Thesis, Helsinki University of Technology. Accessed January 22, 2020. http://lib.tkk.fi/Diss/2005/isbn9512276925/.
Ilvesmäki, Mika. "On Traffic Classification and its Applications in the Internet." 2005. Web. 22 Jan 2020.
Ilvesmäki M. On Traffic Classification and its Applications in the Internet. [Internet] [Thesis]. Helsinki University of Technology; 2005. [cited 2020 Jan 22]. Available from: http://lib.tkk.fi/Diss/2005/isbn9512276925/.
Ilvesmäki M. On Traffic Classification and its Applications in the Internet. [Thesis]. Helsinki University of Technology; 2005. Available from: http://lib.tkk.fi/Diss/2005/isbn9512276925/
University of Missouri – Columbia
20. Abdulhafedh, Azad Salim. Crash severity modeling in transportation systems.
Degree: 2016, University of Missouri – Columbia
► Modeling crash severity is an important component of reasoning about the issues that may affect highway safety. A better understanding of the factors underlying crash… (more)
▼ Modeling crash severity is an important component of reasoning about the issues that may affect highway safety. A better understanding of the factors underlying crash severity can be used to reduce the degree of crash severity injury, locate road hazardous sites, and adopt suitable countermeasures. In order to provide insights on the mechanism and behavior of the crash severity injury, a variety of statistical approaches have been utilized to model the relationship between crash severity and potential risk factors. Many of the traditional approaches for analyzing crash severity are limited in that they are based on the assumption that all observations are independent of each other. However, given the reality of vehicle movement in networked systems, the assumption of independence of crash incidence is not likely valid. For instance, spatial and temporal autocorrelations are important sources of dependency among observations that may bias estimates if not considered in the modeling process. Moreover, there are other aspects of vehicular travel that may influence crash severity that have not been explored in traditional analysis approaches. One such aspect is the roadway visibility that is available to a driver at a given time that can impact their ability to react to changing traffic conditions, a characteristics known as sight distance. Accounting for characteristics such as sight distance in crash severity modeling involve moving beyond statistical analysis and modeling the complex geospatial relationships between the driver and the surrounding landscape. To address these limitations of traditional approaches to crash severity modeling, this dissertation first details a framework for detecting temporal and spatial autocorrelation in crash data. An approach for evaluating the sight distance available to drivers along roadways is then proposed. Finally, a crash severity model is developed based upon a multinomial logistic regression approach that incorporates the available sight distance and spatial autocorrelation as potential risk factors, in addition to a wide range of other factors related to road geometry, traffic volume, driver's behavior, environment, and vehicles. To demonstrate the characteristics of the proposed model, an analysis of vehicular crashes (years 2013-2015) along the I-70 corridor in the state of Missouri (MO) and on roadways in Boone County MO is conducted. To assess existing stopping sight distance and decision sight distance on multilane highways, a geographic information system (GIS)-based viewshed analysis is developed to identify the locations that do not conform to AASHTO (2011) criteria regarding stopping and decision sight distances, which could then be used as potential risk factors in crash prediction. Moreover, this method provides a new technique for estimating passing sight distance along two-lane highways, and locating the passing zones and no-passing zones. In order to detect the existence of temporal autocorrelation and whether it's significant in crash data, this dissertation… Advisors/Committee Members: Matisziw, Timothy C. (Timothy Clark) (advisor).
Subjects/Keywords: Traffic safety; Traffic accidents; Roads – Visibility
Abdulhafedh, A. S. (2016). Crash severity modeling in transportation systems . (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/59817
Abdulhafedh, Azad Salim. "Crash severity modeling in transportation systems." 2016. Thesis, University of Missouri – Columbia. Accessed January 22, 2020. http://hdl.handle.net/10355/59817.
Abdulhafedh, Azad Salim. "Crash severity modeling in transportation systems." 2016. Web. 22 Jan 2020.
Abdulhafedh AS. Crash severity modeling in transportation systems. [Internet] [Thesis]. University of Missouri – Columbia; 2016. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/10355/59817.
Abdulhafedh AS. Crash severity modeling in transportation systems. [Thesis]. University of Missouri – Columbia; 2016. Available from: http://hdl.handle.net/10355/59817
21. Bislimi, Mentor. An assessment of road traffic safety in Kosovo : {presentation given on September 6, 2011].
Degree: Professional Studies (CMS), 2011, Rochester Institute of Technology
URL: https://scholarworks.rit.edu/theses/7030
► During the last decade, Kosova has not developed clear and sufficient policies to improve road traffic safety. In the long term, in relation to this… (more)
▼ During the last decade, Kosova has not developed clear and sufficient policies to improve road traffic safety. In the long term, in relation to this matter no strategies, plans, and adequate programs have been drafted. This issue is not yet a priority of Government, although there are some signs that this situation is soon to be reassessed. The lack of road information system, collision of laws, lack of the laws implementation and coordination among designated mechanisms, make this issue more complicated. Furthermore, there are many unregulated issues which are not in compliance with the EU Directives. This capstone project conduct extended surveys producing substantial amounts of significant data ... Based on this survey related to five different groups of respondents, one of the most important measures which should be undertaken to reduce road traffic accidents are put signs and lightning in the roads. Secondly, improve road condition and third one strengthening the procedure to obtain driver license and onwards. Advisors/Committee Members: Bowen, Brian.
Subjects/Keywords: Traffic – Kosovo – Safety; Traffic – Safety – Assessment
Bislimi, M. (2011). An assessment of road traffic safety in Kosovo : {presentation given on September 6, 2011] . (Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/7030
Bislimi, Mentor. "An assessment of road traffic safety in Kosovo : {presentation given on September 6, 2011]." 2011. Thesis, Rochester Institute of Technology. Accessed January 22, 2020. https://scholarworks.rit.edu/theses/7030.
Bislimi, Mentor. "An assessment of road traffic safety in Kosovo : {presentation given on September 6, 2011]." 2011. Web. 22 Jan 2020.
Bislimi M. An assessment of road traffic safety in Kosovo : {presentation given on September 6, 2011]. [Internet] [Thesis]. Rochester Institute of Technology; 2011. [cited 2020 Jan 22]. Available from: https://scholarworks.rit.edu/theses/7030.
Bislimi M. An assessment of road traffic safety in Kosovo : {presentation given on September 6, 2011]. [Thesis]. Rochester Institute of Technology; 2011. Available from: https://scholarworks.rit.edu/theses/7030
22. Yongsheng, Chen. Integrating Information From Prior Research Into A Before-After Road Safety Evaluation Through Bayesian Approach And Data Sampling.
Degree: 2013, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1776
► Before-after road safety evaluation (B/A) to measure safety treatment effect is a key mission in road safety management, and has fueled considerable research. However, previous… (more)
▼ Before-after road safety evaluation (B/A) to measure safety treatment effect is a key mission in road safety management, and has fueled considerable research. However, previous research in this area has been overwhelmingly dedicated to safety model estimation with less emphasis on other methodological issues. As a result, there continues to be uncertainty in the validity of treatment effect estimates. This study seeks, with innovative paradigms, a systematic solution by solidifying methodologies for every essential step of a thorough B/A process to secure its ultimate validity.Methodologies of data sampling and processing, and before and after model development, both vital procedures that have been historically neglected, are investigated. A pre-test data sampling approach to select reference groups is established in the context of B/A application. A post-assignment propensity score matching method is developed in order to further eliminate statistical bias while the treatment effect indicator – collision reduction ratio (CRR) – is being estimated.Rather than focus on single safety model development as is common in traffic safety research, this study seeks all viable knowledge by employing various safety measures including collision and safety surrogates, by embedding several adaptable random distributions, by fitting models through both "Frequentist" and "Bayesian" approaches, and by exploring a variety of model forms and components. Accordingly, the output of this study is not a "best" single model, but rather an amalgamation of diversified models. The diversity is shown to be attractive in terms of information conveyed, especially for the B/A process.Finally, this study succeeds in finding a methodology to integrate all of the diverse knowledge sources. The Bayesian Model Averaging (BMA) method is investigated and developed to integrate a variety of statistical significant models without exclusion, in forging a unified model.All methodologies explored and developed in this study are essential to secure the validity of the B/A process. As important, they are substantially connected to each other. Should one method be deficient, the remaining steps cannot guarantee validity of B/A process. As a whole, these methodologies, if properly developed and applied, constitute a logical chain to estimate treatment effect with minimal errors and high validity. Advisors/Committee Members: Ryerson University (Degree grantor).
Subjects/Keywords: Traffic safety – Statistical methods; Traffic accidents – Research
Yongsheng, C. (2013). Integrating Information From Prior Research Into A Before-After Road Safety Evaluation Through Bayesian Approach And Data Sampling . (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1776
Yongsheng, Chen. "Integrating Information From Prior Research Into A Before-After Road Safety Evaluation Through Bayesian Approach And Data Sampling." 2013. Thesis, Ryerson University. Accessed January 22, 2020. https://digital.library.ryerson.ca/islandora/object/RULA%3A1776.
Yongsheng, Chen. "Integrating Information From Prior Research Into A Before-After Road Safety Evaluation Through Bayesian Approach And Data Sampling." 2013. Web. 22 Jan 2020.
Yongsheng C. Integrating Information From Prior Research Into A Before-After Road Safety Evaluation Through Bayesian Approach And Data Sampling. [Internet] [Thesis]. Ryerson University; 2013. [cited 2020 Jan 22]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1776.
Yongsheng C. Integrating Information From Prior Research Into A Before-After Road Safety Evaluation Through Bayesian Approach And Data Sampling. [Thesis]. Ryerson University; 2013. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1776
23. Siddiqui, Sohrab. Empirical assessment of a congestion and weather-responsive advisory variable speed limit system.
Degree: College of Engineering, 2016, Montana State University
URL: https://scholarworks.montana.edu/xmlui/handle/1/13795
► Traffic congestion and safety along urban corridors have become major challenges for most highway agencies in the United States. Adverse weather conditions also present a… (more)
▼ Traffic congestion and safety along urban corridors have become major challenges for most highway agencies in the United States. Adverse weather conditions also present a considerable challenge, both in terms of safety and operations. All these problems along with the increasingly limited resources for infrastructure expansion have urged transportation agencies to investigate innovative traffic management approaches. One of these approaches is the use of Active Traffic Management (ATM) strategies. Within ATM, the practice of Variable Speed Limit (VSL) systems is well suited to improving safety and operations. These systems dynamically utilize real-time traffic and/or weather data to post appropriate speeds that are thought to improve safety and operations along a corridor. The overall aim of this thesis is to investigate the benefits of a recently installed advisory VSL system along OR-217 freeway in Portland, Oregon. This corridor is characterized by high traffic levels, severe congestion and unreliable travel times. The congestion of the freeway contribute to crash rates exceeding the statewide averages for this type of facility. Pacific Northwest's unpredictable climate presents another challenge that doubles the congestion and safety problems along the corridor. The effectiveness of this system was explored through an in-depth 'before and after' and 'on-and-off' analyses. The study was designed in a way that it encompasses both the safety and mobility benefits of the system. Besides, driver compliance with the system was also measured under different scenarios. The results indicated that the system had significant impacts on both mobility and safety. In terms of mobility it was found that system had lowered the average speeds along the corridor. The advisory VSL activation also resulted in reduced capacities. Safety assessment of the system suggested that, VSL has decreased crash rates and temporal and lateral variations of speed. Under certain scenarios, the system also decreased the longitudinal variations of speed. Further, it was also found that due to the advisory nature of the system, the majority of drivers do not comply with the system. However, VSL has resulted in reducing the percentage of aggressive drivers and have increased the number of drivers complying the static speed limit. Advisors/Committee Members: Chairperson, Graduate Committee: Ahmed Al-Kaisy (advisor).
Subjects/Keywords: Weather.; Speed limit.; Traffic engineering.; Traffic safety.
Siddiqui, S. (2016). Empirical assessment of a congestion and weather-responsive advisory variable speed limit system . (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/13795
Siddiqui, Sohrab. "Empirical assessment of a congestion and weather-responsive advisory variable speed limit system." 2016. Thesis, Montana State University. Accessed January 22, 2020. https://scholarworks.montana.edu/xmlui/handle/1/13795.
Siddiqui, Sohrab. "Empirical assessment of a congestion and weather-responsive advisory variable speed limit system." 2016. Web. 22 Jan 2020.
Siddiqui S. Empirical assessment of a congestion and weather-responsive advisory variable speed limit system. [Internet] [Thesis]. Montana State University; 2016. [cited 2020 Jan 22]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/13795.
Siddiqui S. Empirical assessment of a congestion and weather-responsive advisory variable speed limit system. [Thesis]. Montana State University; 2016. Available from: https://scholarworks.montana.edu/xmlui/handle/1/13795
24. Li, Caixia. Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information.
Degree: Engineering & Information Technology, 2014, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/54013  ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true
► The route guidance information, which aims at assigning travellers to a set of paths from origins to destinations, can be obtained by solving the Dynamic… (more)
▼ The route guidance information, which aims at assigning travellers to a set of paths from origins to destinations, can be obtained by solving the Dynamic Traffic Assignment (DTA) problems. However, route choices given by dynamic user equilibrium (DUE) or dynamic system optimum (DSO) cannot simultaneously benefit both sides and can easily result in recurring congestion. In this context, this research focuses on the real-time traffic re-distribution and route guidance system, which can achieve an efficient distribution of network capacity over time and space without seriously violating travellers' preferences. This research is involved with the integration of traffic flow dynamics model, traffic assignment model and route choice modelling.The real-time traffic information provision system is the basis of the research, which can provide real-time traffic information prediction based on day-to-day dynamics and current traffic information. Traffic dynamics models are targeted to support Advanced Traffic Management and InformationSystem (ATMIS) to provide a mathematical approximation of the dynamics of traffic flows based on the real-time traffic information. In this research, a path based flow model integrated the point queue model (PQ) with generalized expansion method (GEM) is proposed, which can capture traffic dynamics and model dynamic flow propagation process. Based on the path based flow model, the path marginal cost can be achieved and time dependent traffic assignment can be established.In order to meet the requirements of travellers, a route choice modelling combining the analytical hierarchy process (AHP) with fuzzy inference technique is introduced, which can handle the vagueness of traffic attributes, simplify the definition of decision strategy and represent multiple criterions explicitly. The user equilibrium (UE) traffic assignment based on the route choice modelling can be favourable to travellers. For the traffic management, it requires vehicles cooperatively to achieve system optimal (SO) traffic assignment, while traffic users competitively make route choices based on UE traffic assignment. Thus, the cooperation and competition relationship can be modelled by the Stackelberg game based model to balance the benefit between traffic authorities and travellers. Moreover, the gradient projection method is introduced to improve the efficiency of the integrated system. Advisors/Committee Members: Anavatti, Sreenatha, Engineering & Information Technology, UNSW Canberra, UNSW, Ray, Tapabrata, Engineering & Information Technology, UNSW Canberra, UNSW.
Subjects/Keywords: Route choice modelling; Traffic assignment; Traffic prediction
Li, C. (2014). Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information . (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true
Li, Caixia. "Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information." 2014. Doctoral Dissertation, University of New South Wales. Accessed January 22, 2020. http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true.
Li, Caixia. "Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information." 2014. Web. 22 Jan 2020.
Li C. Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2020 Jan 22]. Available from: http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true.
Li C. Improving Cooperative Transportation Management and Route Guidance Systems under Provision of Real-Time Traffic Information. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/54013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12721/SOURCE02?view=true
25. Ye, Hongbo. Day-to-day flow dynamic models and applications.
Degree: 2014, Hong Kong University of Science and Technology
URL: http://repository.ust.hk/ir/Record/1783.1-70915  ; https://doi.org/10.14711/thesis-b1334181  ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html
► This dissertation proposes two new models and discusses two applications of day-to-day dynamic models. A generalized invariance theorem is adopted to investigate the stability issues… (more)
▼ This dissertation proposes two new models and discusses two applications of day-to-day dynamic models. A generalized invariance theorem is adopted to investigate the stability issues of these models when the widely-used Lyapunov's second theorem and Lasalle's invariance principle are not applicable. Flow dynamics incorporating tradable credit scheme and congestion pricing scheme are investigated. The effectiveness of both schemes can be assured under mild conditions. The first model combines traveler's perceiving, learning and route switching behavior while assuring nonnegative flows. With separable link travel time functions, the dynamic path flows converge to the Wardrop's user equilibrium path flow set. In the second model, the rational behavior adjustment process in Yang and Zhang (2009) is extended to incorporate boundedly rational user equilibrium. Specific models are constructed and numerical examples are conducted for demonstration. The first application of day-to-day dynamics is to investigate the price and flow dynamics of a tradable credit scheme. A continuous dynamic model in a finite time horizon is proposed to describe travelers' learning behavior and the evolution of network flows and credit price. Existence and uniqueness of the equilibria are established. The conditions for stability and convergence of the dynamic system as the time horizon extends to infinity and the impact of limited implementation time horizon on the system behavior are investigated. The second application examines the availability of a trial-and-error toll scheme with day-to-day flow dynamics. The trial-and-error method was proposed in Yang et al. (2004) for discovering system optimal flow pattern and toll scheme with the absence of demand functions: the links tolls were firstly calculated based on some target flow pattern and then imposed on the network, after which the user equilibrium flow pattern was instantly reached and utilized to update the target flows. In this dissertation, the assumption on the instantaneous realization of user equilibrium in Yang et al. (2004) is relaxed and their iterative scheme is extended for implementing the road pricing in a traffic network with day-to-day flow dynamics and evolution. The path flows are assumed to evolve following the "excess travel cost dynamics" during each inter-trial period and the user equilibrium state may not be achieved at the end of each inter-trial period. With mild assumptions on the flow evolution process, the trial-and-error method is still applicable to identify the system optimal link tolls and decentralize the system optimal flows, while neither the demand functions nor the mechanism of the flow evolution are explicitly required. A methodology is developed for both updating the toll charges and choosing the inter-trial periods to assure the iterative approach converging towards the system optimum. Some numerical examples are conducted to support the theoretical findings.
Subjects/Keywords: Traffic assignment ; Mathematical models ; Traffic flow
Ye, H. (2014). Day-to-day flow dynamic models and applications . (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html
Ye, Hongbo. "Day-to-day flow dynamic models and applications." 2014. Thesis, Hong Kong University of Science and Technology. Accessed January 22, 2020. http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html.
Ye, Hongbo. "Day-to-day flow dynamic models and applications." 2014. Web. 22 Jan 2020.
Ye H. Day-to-day flow dynamic models and applications. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2020 Jan 22]. Available from: http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html.
Ye H. Day-to-day flow dynamic models and applications. [Thesis]. Hong Kong University of Science and Technology; 2014. Available from: http://repository.ust.hk/ir/Record/1783.1-70915 ; https://doi.org/10.14711/thesis-b1334181 ; http://repository.ust.hk/ir/bitstream/1783.1-70915/1/th_redirect.html
26. Chowdhury, Sharmin-E-Shams. Estimating Pedestrian Impact on Coordination of Urban Corridors.
Degree: MS, 2018, Florida Atlantic University
URL: http://fau.digital.flvc.org/islandora/object/fau:40913
At most of the US signal, pedestrian walk timings run in concurrence with relevant vehicular traffic signal phases which means that major-street coordinated operations can… (more)
At most of the US signal, pedestrian walk timings run in concurrence with relevant vehicular traffic signal phases which means that major-street coordinated operations can be interrupted by a pedestrian call. Such interruption may increase delays and stops for major traffic flows. An alternative to this design is to increase the cycle length and embed pedestrian timings within the ring-barrier structure of the prevailing coordination plan. Both approaches have advantages and disadvantages. This study attempts a novel approach to address this situation by a comprehensive experimental evaluation of traffic performance under various pedestrian signal timing strategies. Findings show that either abovementioned approach works well for very low traffic demands. When the traffic demand increases findings cannot be generalized as they differ for major coordinated movements versus overall network performance. While coordinated movements prefer no interruption of the coordinated operations, the overall network performance is better in the other case.
Degree granted: Thesis (M.S.) – Florida Atlantic University, 2018.
Collection: FAU
Advisors/Committee Members: Stevanovic, Aleksandar (Thesis advisor), Florida Atlantic University (Degree grantor), College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering.
Subjects/Keywords: Transportation corridors; Pedestrians; Urban traffic; Traffic estimation
Chowdhury, S. (2018). Estimating Pedestrian Impact on Coordination of Urban Corridors . (Masters Thesis). Florida Atlantic University. Retrieved from http://fau.digital.flvc.org/islandora/object/fau:40913
Chowdhury, Sharmin-E-Shams. "Estimating Pedestrian Impact on Coordination of Urban Corridors." 2018. Masters Thesis, Florida Atlantic University. Accessed January 22, 2020. http://fau.digital.flvc.org/islandora/object/fau:40913.
Chowdhury, Sharmin-E-Shams. "Estimating Pedestrian Impact on Coordination of Urban Corridors." 2018. Web. 22 Jan 2020.
Chowdhury S. Estimating Pedestrian Impact on Coordination of Urban Corridors. [Internet] [Masters thesis]. Florida Atlantic University; 2018. [cited 2020 Jan 22]. Available from: http://fau.digital.flvc.org/islandora/object/fau:40913.
Chowdhury S. Estimating Pedestrian Impact on Coordination of Urban Corridors. [Masters Thesis]. Florida Atlantic University; 2018. Available from: http://fau.digital.flvc.org/islandora/object/fau:40913
27. Coric, Vladimir. Data Mining Algorithms for Traffic Sampling, Estimation and Forecasting.
Degree: PhD, 2014, Temple University
URL: http://digital.library.temple.edu/u?/p245801coll10,299531
Despite the significant investments over the last few decades to enhance and improve road infrastructure worldwide, the capacity of road networks… (more)
Despite the significant investments over the last few decades to enhance and improve road infrastructure worldwide, the capacity of road networks has not kept pace with the ever increasing growth in demand. As a result, congestion has become endemic to many highways and city streets. As an alternative to costly and sometimes infeasible construction of new roads, transportation departments are increasingly looking at ways to improve traffic flow over the existing infrastructure. The biggest challenge in accomplishing this goal is the ability to sample traffic data, estimate traffic current state, and forecast its future behavior. In this thesis, we first address the problem of traffic sampling where we propose strategies for frugal sensing where we collect a fraction of the observed traffic information to reduce costs while achieving high accuracy. Next we demonstrate how traffic estimation using deterministic traffic models can be improved using proposed data reconstruction techniques. Finally, we propose how mixture of experts algorithm which consists of two regime-specific linear predictors and a decision tree gating function can improve short-term and long-term traffic forecasting. As mobile devices become more pervasive, participatory sensing is becoming an attractive way of collecting large quantities of valuable location-based data. An important participatory sensing application is traffic monitoring, where GPS-enabled smartphones can provide invaluable information about traffic conditions. We propose a strategy for frugal sensing in which the participants send only a fraction of the observed traffic information to reduce costs while achieving high accuracy. The strategy is based on autonomous sensing, in which participants make decisions to send traffic information without guidance from the central server, thus reducing the communication overhead and improving privacy. To provide accurate and computationally efficient estimation of the current traffic, we propose to use a budgeted version of the Gaussian Process model on the server side. The experiments on real-life traffic data sets indicate that the proposed approach can use up to two orders of magnitude less samples than a baseline approach with only a negligible loss in accuracy. The estimation of the state of traffic provides a detailed picture of the conditions of a traffic network based on limited traffic measurements and, as such, plays a key role in intelligent transportation systems. Most often, traffic measurements are aggregated over multiple time steps, and this procedure raises the question of how to best use this information for state estimation. Reconstructing the high-resolution measurements from the aggregated ones and using them to correct the state estimates at every time step are proposed. Several reconstruction techniques from signal processing, including kernel regression and a reconstruction approach based on convex optimization, were considered. Experimental results show that signal reconstruction…
Advisors/Committee Members: Vucetic, Slobodan;, Obradovic, Zoran, Latecki, Longin, Zhu, Ying;.
Subjects/Keywords: Computer science;
Coric, V. (2014). Data Mining Algorithms for Traffic Sampling, Estimation and Forecasting . (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,299531
Coric, Vladimir. "Data Mining Algorithms for Traffic Sampling, Estimation and Forecasting." 2014. Doctoral Dissertation, Temple University. Accessed January 22, 2020. http://digital.library.temple.edu/u?/p245801coll10,299531.
Coric, Vladimir. "Data Mining Algorithms for Traffic Sampling, Estimation and Forecasting." 2014. Web. 22 Jan 2020.
Coric V. Data Mining Algorithms for Traffic Sampling, Estimation and Forecasting. [Internet] [Doctoral dissertation]. Temple University; 2014. [cited 2020 Jan 22]. Available from: http://digital.library.temple.edu/u?/p245801coll10,299531.
Coric V. Data Mining Algorithms for Traffic Sampling, Estimation and Forecasting. [Doctoral Dissertation]. Temple University; 2014. Available from: http://digital.library.temple.edu/u?/p245801coll10,299531
28. Zhu, Ye. On traffic analysis in anonymous communication networks.
Degree: 2009, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-1758
► In this dissertation, we address issues related to traffic analysis attacks and the engineering in anonymous communication networks. Mixes have been used in many anonymous… (more)
▼ In this dissertation, we address issues related to traffic analysis attacks and the engineering in anonymous communication networks. Mixes have been used in many anonymous communication systems and are supposed to provide countermeasures that can defeat various traffic analysis attacks. In this dissertation, we first focus on a particular class of traffic analysis attack, flow correlation attacks, by which an adversary attempts to analyze the network traffic and correlate the traffic of a flow over an input link at a mix with that over an output link of the same mix. Two classes of correlation methods are considered, namely time-domain methods and frequency-domain methods. We find that a mix with any known batching strategy may fail against flow correlation attacks in the sense that, for a given flow over an input link, the adversary can correctly determine which output link is used by the same flow. We theoretically analyze the effectiveness of a mix network under flow correlation attacks. We extend flow correlation attack to perform flow separation: The flow separation attack separates flow aggregates into either smaller aggregates or individual flows. We apply blind source separation techniques from statistical signal processing to separate the traffic in a mix network. Our experiments show that this attack is effective and scalable. By combining flow separation and frequency spectrum matching method, a passive attacker can get the traffic map of the mix network. We use a non-trivial network to show that the combined attack works. The second part of the dissertation focuses on engineering anonymous communication networks. Measures for anonymity in systems must be on one hand simple and concise, and on the other hand reflect the realities of real systems. We propose a new measure for the anonymity degree, which takes into account possible heterogeneity. We model the effectiveness of single mixes or of mix networks in terms of information leakage and measure it in terms of covert channel capacity. The relationship between the anonymity degree and information leakage is described, and an example is shown. Advisors/Committee Members: Bettati, Riccardo (advisor), Reddy, Narasimha A. L. (advisor), Longnecker, Michael (committee member), Zhao, Wei (committee member).
Subjects/Keywords: traffic analysis; anonymity
Zhu, Y. (2009). On traffic analysis in anonymous communication networks . (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1758
Zhu, Ye. "On traffic analysis in anonymous communication networks." 2009. Thesis, Texas A&M University. Accessed January 22, 2020. http://hdl.handle.net/1969.1/ETD-TAMU-1758.
Zhu, Ye. "On traffic analysis in anonymous communication networks." 2009. Web. 22 Jan 2020.
Zhu Y. On traffic analysis in anonymous communication networks. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1758.
Zhu Y. On traffic analysis in anonymous communication networks. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1758
29. Bernhardt, Peter, 1973-. Development of a simulation and evaluation environment for a traffic flow analysis system.
Degree: MS, 2010, University of Louisville
URL: 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103
► A system for analysis of the traffic flow on public streets and highways through the use of Floating Car Data (FCD) relies completely on the… (more)
▼ A system for analysis of the traffic flow on public streets and highways through the use of Floating Car Data (FCD) relies completely on the number of simultaneously contributing vehicles, a fact that is no barrier for the phases of conception and development but poses a serious issue for the testing of such a system. Especially for smaller institutions or companies where the ability and resources to field the required number of participants is not given which in turn leads to the need for computational support to substitute the use of real vehicles by simulation. This thesis focuses on the task of the design and development of a simulation and evaluation environment for a pre-developed Traffic Flow Analysis System. The objective of this environment is to simulate the behavior of real vehicles on the existing street network including their most relevant characteristics for the purpose of congestion recognition. It is shown how simulation methods can be effectively used to create such an environment while using mathematical methods to model the characteristics of the participating system parts (vehicles) as well as the environmental influence on the external communication components (GPS, Radio). Advisors/Committee Members: Biles, William E..
Subjects/Keywords: Simulation; Traffic flow
Bernhardt, Peter, 1. (2010). Development of a simulation and evaluation environment for a traffic flow analysis system. (Masters Thesis). University of Louisville. Retrieved from 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103
Bernhardt, Peter, 1973-. "Development of a simulation and evaluation environment for a traffic flow analysis system." 2010. Masters Thesis, University of Louisville. Accessed January 22, 2020. 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103.
Bernhardt, Peter, 1973-. "Development of a simulation and evaluation environment for a traffic flow analysis system." 2010. Web. 22 Jan 2020.
Bernhardt, Peter 1. Development of a simulation and evaluation environment for a traffic flow analysis system. [Internet] [Masters thesis]. University of Louisville; 2010. [cited 2020 Jan 22]. Available from: 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103.
Bernhardt, Peter 1. Development of a simulation and evaluation environment for a traffic flow analysis system. [Masters Thesis]. University of Louisville; 2010. Available from: 10.18297/etd/103 ; https://ir.library.louisville.edu/etd/103
30. Ashworth, Ian Leslie Raymond. Vehicle tracking and traffic monitoring at an intersection using an uncalibrated stereo vision system.
Degree: 2012, University of Johannesburg
M.Ing.
Traffic has become an extreme irritation and costly entity to deal with in recent years. Gone are the days where one could simply widen… (more)
Traffic has become an extreme irritation and costly entity to deal with in recent years. Gone are the days where one could simply widen roadways to increase flow rates due to space constraints. Traffic costs countries billions of dollars per annum and thus the need to alleviate traffic congestion. Many technologies are currently available that can be used to lower the traffic density at an intersection, one of them being the use of cameras. Not only are digital cameras dropping in price, but the associated cost of maintenance is low. Distance information of a scene can thus be calculated via a visual system and from this information advanced control can be implemented in order to maximise traffic flow through an intersection. A traffic simulator was coded and analysed in order to validate the use of a visual system for increasing the amount of cars passing through the intersection per unit time over the current fixed timing system. Two different algorithms were compared to the current fixed timing scheme using a traffic simulator. The results showed that an improvement can be achieved over the current fixed timing scheme (of up to 19.92%). The use of stereovision as a method of attempting to monitor traffic flow is discussed. Vehicles were tracked using 13 trackers and the distance away from the stereo setup was calculated and compared to the actual distance away from the stereo setup. The best results found that with a baseline distance of 1500mm the average error in determining the distance of a vehicle was 16.46m. Although this error is quite large, it is still possible to monitor traffic flow using stereo vision with these inputs. Some of the issues that may cause these errors are camera quality, camera calibration and variable lighting conditions.
Subjects/Keywords: Traffic regulations; Vehicle tracking; Traffic engineering; Traffic engineering - Data processing; Traffic engineering - Simulation methods
Ashworth, I. L. R. (2012). Vehicle tracking and traffic monitoring at an intersection using an uncalibrated stereo vision system . (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/5333
Ashworth, Ian Leslie Raymond. "Vehicle tracking and traffic monitoring at an intersection using an uncalibrated stereo vision system." 2012. Thesis, University of Johannesburg. Accessed January 22, 2020. http://hdl.handle.net/10210/5333.
Ashworth, Ian Leslie Raymond. "Vehicle tracking and traffic monitoring at an intersection using an uncalibrated stereo vision system." 2012. Web. 22 Jan 2020.
Ashworth ILR. Vehicle tracking and traffic monitoring at an intersection using an uncalibrated stereo vision system. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2020 Jan 22]. Available from: http://hdl.handle.net/10210/5333.
Ashworth ILR. Vehicle tracking and traffic monitoring at an intersection using an uncalibrated stereo vision system. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/5333


text:
Betable Test App
===================

This is a simple test app built on top of the Betable Node.js SDK, and the Betable frontend Javascript SDK.
The game is a configurable slot machine.

Installation
------------
*npm install*
(from the app directory)

Configuration (Sandbox mode)
------------

#### config/configs/base.js

* Update *game_id*
* Update *symbols*
* Update *paylines*

#### config/configs/sandbox.js

* Update *api_key*
* Update *api_secret*

Start the server
------------
*NODE_ENV=production NODE_ECONOMY=sandbox node server.js*

if you want to use unbacked bets use:

*NODE_ENV=production NODE_ECONOMY=sandbox NODE_MODE=unbacked node server.js*

redpajama_set_name: RedPajamaGithub


The Securities and Exchange Commission today announced that Morgan Stanley Smith Barney has agreed to pay an $8 million penalty and admit wrongdoing to settle charges related to single inverse ETF investments it recommended to advisory clients.
The SEC's order finds that Morgan Stanley did not adequately implement its policies and procedures to ensure that clients understood the risks involved with purchasing inverse ETFs. Among the order's findings, Morgan Stanley failed to obtain from several hundred clients a signed client disclosure notice, which stated that single inverse ETFs were typically unsuitable for investors planning to hold them longer than one trading session unless used as part of a trading or hedging strategy. Morgan Stanley solicited clients to purchase single inverse ETFs in retirement and other accounts, the securities were held long-term, and many of the clients experienced losses.
The SEC's order further finds that Morgan Stanley failed to follow through on another key policy and procedure requiring a supervisor to conduct risk reviews to evaluate the suitability of inverse ETFs for each advisory client. Among other compliance failures, Morgan Stanley did not monitor the single-inverse ETF positions on an ongoing basis and did not ensure that certain financial advisers completed single inverse ETF training.
The SEC's investigation was conducted by Breanne Atzert, Helaine Schwartz, and Stephan Schlegelmilch, and the case was supervised by Lisa Deitch and Antonia Chion.
Investors can learn more about the risks involved with leveraged and inverse ETFs by reading an investor alert issued by the SEC and FINRA.