<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>potatolicious</author><text>Yes. For a few reason:&lt;p&gt;- The train doors need to line up closely with the glass doors, for obvious reasons. Commuter trains in the US are not capable of stopping so precisely. Usually the trains would have to support some kind of computerized stop-assist in order to be precise enough to pull this off.&lt;p&gt;- Said stop-assist wouldn&amp;#x27;t just be a train feature, it would involve communication with the track, and therefore upgrades to the entire signaling system. Many systems have this &amp;quot;for free&amp;quot; by virtue of being built later. The actual track Caltrain runs on pre-dates Caltrain itself by a wide margin.&lt;p&gt;- You need to run a unified, homogeneous vehicle fleet so the doors are in the same places on all trains. This is the problem with safety doors in large legacy train systems (see: NYC, Chicago) where due to legacy factors there are many vastly different trains all running on the same track.&lt;p&gt;A lot of non-trivial problems where the only solution is vast capital spending.</text><parent_chain><item><author>Karunamon</author><text>Would it would really be that expensive to install what amounts to a row of automatic glass doors like you have at the supermarket?</text></item><item><author>ZanyProgrammer</author><text>Its too expensive to do that to all Caltrain stations. The reality is there are better things to spend money on for Caltrain (like electrification).</text></item><item><author>jakobe</author><text>Most subway stations in Singapore have walls with doors between the train and the platform. The doors open only after the train arrived and stopped. (It&amp;#x27;s similar to elevator doors.)&lt;p&gt;Makes it impossible to fall or jump on the tracks.</text></item><item><author>GuiA</author><text>Those Caltrain accidents seem to happen all the frigging time [1]. I&amp;#x27;m not sure much can be done about them, but every time I hear about one my heart sinks a little lower.
Is there any obvious thing that I&amp;#x27;m missing that could be done?&lt;p&gt;[1]: 12 a year on average apparently:  &lt;a href=&quot;http://kalw.org/post/caltrain-engineer-talks-about-coping-track-deaths&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;kalw.org&amp;#x2F;post&amp;#x2F;caltrain-engineer-talks-about-coping-tr...&lt;/a&gt;</text></item></parent_chain></comment><story><title>Nvidia marketing manager killed during train rescue attempt</title><url>http://www.polygon.com/2014/1/25/5344390/nvidia-marketing-manager-killed-during-train-rescue-attempt</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>archgoon</author><text>Yes.&lt;p&gt;&lt;a href=&quot;http://www.caltrain.com/stations/systemmap.html&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;www.caltrain.com&amp;#x2F;stations&amp;#x2F;systemmap.html&lt;/a&gt;&lt;p&gt;This isn&amp;#x27;t a subway, where the entry points are clearly defined. Look at this station, for example&lt;p&gt;&lt;a href=&quot;http://goo.gl/maps/vmYxx&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;goo.gl&amp;#x2F;maps&amp;#x2F;vmYxx&lt;/a&gt;&lt;p&gt;The tracks keep going, with basically nothing protecting them. Putting up walls around the entire thing would be a significant undertaking.</text><parent_chain><item><author>Karunamon</author><text>Would it would really be that expensive to install what amounts to a row of automatic glass doors like you have at the supermarket?</text></item><item><author>ZanyProgrammer</author><text>Its too expensive to do that to all Caltrain stations. The reality is there are better things to spend money on for Caltrain (like electrification).</text></item><item><author>jakobe</author><text>Most subway stations in Singapore have walls with doors between the train and the platform. The doors open only after the train arrived and stopped. (It&amp;#x27;s similar to elevator doors.)&lt;p&gt;Makes it impossible to fall or jump on the tracks.</text></item><item><author>GuiA</author><text>Those Caltrain accidents seem to happen all the frigging time [1]. I&amp;#x27;m not sure much can be done about them, but every time I hear about one my heart sinks a little lower.
Is there any obvious thing that I&amp;#x27;m missing that could be done?&lt;p&gt;[1]: 12 a year on average apparently:  &lt;a href=&quot;http://kalw.org/post/caltrain-engineer-talks-about-coping-track-deaths&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;kalw.org&amp;#x2F;post&amp;#x2F;caltrain-engineer-talks-about-coping-tr...&lt;/a&gt;</text></item></parent_chain></comment><story><title>Nvidia marketing manager killed during train rescue attempt</title><url>http://www.polygon.com/2014/1/25/5344390/nvidia-marketing-manager-killed-during-train-rescue-attempt</url></story>