The Transit Coalition:

The Transit Coalition
The Transit Coalition Inland Empire
Metrolink MAX

Transportation Organizations and Government Agencies:

Amtrak California
California High-Speed Rail Authority
Caltrans - District 8 - Riverside and San Bernardino Counties
Federal Railroad Administration

Transit Agency Web sites:

Riverside Transit Agency
North County Transit DistrictSunLine Transit Agency
OC Transportation Authority
Palo Verde Valley Transit
Corona Cruiser
Pass Transit - Beaumont
Pass Transit - Banning

Transportation Blogs & Newsletters:

ABIE Transit Talking Points Blog
The Transit Coalition Blog
TTC Discussion Board
Riding in Riverside
TTC Weekly eNewsletters
Submit Articles

Other Advocacy Groups:

Train Riders Association of California (TRAC)
National Association of Rail Passengers (NARP)
Light Rail Now! - Light Rail Progress
Southern California Transit Advocates
LA Bus Riders Union (BRU)