The current Transportation Alternatives Program (TAP), a Federal-Aid Highway program, is a component of the federal transportation bill – Moving Ahead for Progress in the 21st Century, also known as MAP-21 signed in July 2012. TAP recieved some minor changes and updates during the signing of The Fixing America’s Surface Transportation (FAST) Act on Dec. 4, 2015, as well as a new name the "Transportation Alternatives Set-Aside" program, but is still commonly known as TAP.
These set-aside funds include:
1) Most of the eligible activities from the Transportation Enhancement (TE) Program, now known as Transportation Alternatives (TA), which has ten qualifying TA sub-activities
2) Safe Routes to School Program (SRTS) activities
3) Recreational Trails Program activities and
4) Planning, designing, or constructing boulevards and other roadways largely in the right-of-way of former Interstate System routes or other divided highways