Below you will find links to the websites of organizations that are members of the California Transit Association. 

Public Transit Agencies

Access Services
Alameda-Contra Costa Transit District
Anaheim Transportation Network
Antelope Valley Transit Authority
Arcata Mad River Transit System 
Central Contra Costa Transit Authority
Chula Vista Transit
City of Arcadia
City of Benicia
City of Commerce
City of Culver
City of Elk Grove, Department Services, Transit
City of Folsom/Folsom Stageline
City of Fresno/Fresno Area Express
City of Lodi
City of Lompoc
City of Los Angeles Department of Transportation
City of Modesto Transit Division
City of Redondo Beach - Transit Division
City of San Luis Obispo
City of Thousand Oaks, Thousand Oaks Transit
City Of Vallejo - Vallejo Transit
Eastern Contra Costa Transit Authority
El Dorado County Transit Authority
Fairfield and Suisun Transit
Foothill Transit
Fresno County Rural Transit Agency
Gardena Municipal Bus Lines
Gold Coast Transit
Golden Empire Transit District
Golden Gate Bridge, Highway And Transport District
Humboldt Transit Authority
Livermore/Amador Valley Transit Authority
Long Beach Transit
Los Angeles County Metropolitan Transportation Authority
Marin Transit District
Mendocino Transit Authority
Merced County Transit
Montebello Bus Lines
Monterey-Salinas Transit
Morongo Basin Transit Authority
North County Transit District
Norwalk Transit
Omnitrans
Orange County Transportation Authority
Pasadena Area Rapid Transit System
Placer County Transit/Tahoe Area Regional Transit
Redding Area Bus Authority
Riverside Transit Agency
Sacramento Regional Transit District
San Diego Metropolitan Transit System
San Diego Transit Corporation
San Diego Trolley, Inc.
San Francisco Bay Area Rapid Transit District
San Francisco Municipal Transportation Agency
San Joaquin Regional Transit District
San Mateo County Transit District
Santa Barbara Metropolitan Transit District
Santa Clara Valley Transportation Authority
Santa Clarita Transit
Santa Cruz Metropolitan Transit District
Santa Maria Area Transit
Santa Monica's Big Blue Bus
Santa Rosa Citybus
Simi Valley Transit
Siskiyou County Transit and General Express (STAGE)
Solano Transportation Authority
Sonoma County Transit
South County Area Transit
South Tahoe Area TA/Tahoe Regional Planning Agency
Stanislaus Regional Transit
Sunline Transit Agency
Torrance Transit System
Union City Transit
Unitrans
Victor Valley Transit Authority
Visalia City Coach
Western Contra Costa Transit Authority
Yolo County Transportation District
Yuba-Sutter Transit

Commuter Rail Agencies

Altamont Commuter Express
Capitol Corridor Joint Powers Authority
Peninsula Corridor Joint Powers Board (Caltrain)
Southern California Regional Rail Authority

Transit Support Groups

California Association for Coordinated Transportation (CalACT)
California Department Of Transportation
Contra Costa Transportation Authority
Metropolitan Transportation Commission
Riverside County Transportation Commission
Sacramento Area Council Of Governments
San Bernardino Associated Governments
San Diego Association Of Governments
San Luis Obispo Council Of Governments
Ventura County Transportation Commission
Water Emergency Transportation Authority

Transit Industry Suppliers

ABC Companies
ACS Government Solutions
ACS Transportation Management Solutions
Alexander-Dennis
American Moving Parts
American Seating Company
Ametek Rotron Technical & Industrial Products
A-Z Bus Sales
Bickmore Risk Services
Bombardier Transportation
Braun Corporation, The
Bustex Corp.
BusWest
C.E. Niehoff & Co.
CHASSIJET USA, Inc.
CHK America, Inc.
Clark Pacific
Clean Air Technologies
Clean Energy
Clever Devices Ltd.
Complete Coach Works
Creative Bus Sales
Cubic Transportation Systems
Cummins Cal Pacific, LLC
Cummins West, Inc.
Daimler Buses North America
Diamond Manufacturing, Inc.
Diesel Radiator Company
Digital Recorders, Inc.
DMJM+HARRIS, Inc.
ElDorado National
First Transit, Inc.
Gannett Fleming, Inc.
GFI-Genfare
Gillig Corporation
Hanson Bridgett LLP
Hatch Mott MacDonald
Hepo Filters, Inc.
HNTB Corporation
Infor Public Sector
ISE Corporation
John Burnham Insurance
Keenan & Associates
Lift-U
LSC Transportation Consultants, Inc
LTK Engineering Services
Luminator
Mackenzie Laboratories, Inc.
Maintenance Design Group, LLC
Majic Consulting Group
MAXIMUS, Inc.
McCalley Consulting
Mentor Engineering Inc.
Mitsuike Corporation
Motor Coach Industries, Inc.
Municipal Services Group, Inc.
MV Transportation, Inc.
N/S Corporation
Nelson/Nygaard Consulting Associates
New Flyer Of America
North American Bus Industries, Inc.
On Time Consulting Services, Inc.
On-Site Analysis, Inc.
Orrick Herrington And Sutcliffe, LLP
Paratransit, Inc.
PB Americas, Inc
Proterra
Psomas Civil Engineers & Land Surveyors
Public Financial Management, Inc
Q'straint
Ricon Corporation
RNL
Routematch Software
RSM Services Corporation
Safety Vision
Seon Design, Inc.
Southern California Gas Company
STV Incorporated
Sutrak Corporation
Tectrans Inc.
The Vehicle Production Group, LLC
TranSched Systems LLC
Transit Marketing Group
TRANSMETRICS, INC.
Transportation Concepts
TransTrack Systems, Inc.
Trapeze Software Group, Inc.
Trillium USA, LLC
TwinVision Na, Inc.
Valley Power Systems, Inc.
Vapor Bus International - A Wabtec Company
Veolia Transportation
Vigil Solution Inc
Voith Turbo Inc.
Western Highway Products
ZF Industries, Inc.