3 links
Federal Transit Administration
fta.dot.gov
Compiles statistics and makes recommendations for U.S. mass transit.
NJ Transit / PATH / New York City Subway Information
njnyrails.com
Includes New Jersey Transit schedules and station information, subway station and line information, subway directions, and information about all three New York City area systems.
South West Transit Association
swta.org
Trade association for public transit agencies in Arkansas, Arizona, Kansas, Louisiana, New Mexico, Oklahoma, and Texas.