Transportation Safety Institute

http://www.ntl.bts.gov/

National Transportation Library

The Library is intended to facilitate the exchange of information related to transportation.
 

http://www.bts.gov/

http://www.ezpass.com/whatis.shtml
The EZPass is modeled by the LEGO RCX car.  When the car has "paid" it can go through the gate. Try the RED ROVER RED ROVER to operate the LEGO CITY car.  Click http://www.marshall.edu/lego/city/ for instructions.
http://www.sciam.com/1097issue/1097rillings.html has an article on the automated highways.  The Black line for the LEGO car to follow is an model example.

http://www.wvdot.com/

West Virginia Department of Transportation
 

http://www.ite.org/

http://www.nhtsa.dot.gov/

National Highway Traffic Safety Administration (NHTSA)
 
 

http://web.mit.edu/cts/www/index.html

MIT center for transportation studies.
 
 

http://www.apta.com/

American Public Transportation Association

It tells you the best information about the Public Transportation

http://utc.dot.gov/listing1.html

http://transweb.sjsu.edu/