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Atlanta Metropolitan Rapid Transit Authority
<http://www.itsmarta.com>
Baltimore MTA
<http://www.mtamaryland.com>
Chicago Transit Authority
<http://www.transitchicago.com>
Dallas Area Rapid Transit Authority
<http://www.dart.org>
Denver Regional Transportation District
<http://www.rtd-denver.com>
Detroit Department of Transportation
<http://www.ci.detroit.mi.us/ddot>
Harris County Metropolitan Transit Authority
<http://www.hou-metro.harris.tx.us>
Los Angeles County Metropolitan Transportation
Authority
<http://www.mta.net>
Massachusetts Bay Transportation Authority
<http://www.mbta.com>
Memphis Area Transit Authority
<http://www.matatransit.com>
Miami-Dade Transit
<http://www.co.miami-dade.fl.us/mdta>
New Orleans Regional Transit Authority
<http://www.regionaltransit.org>
New York Metropolitan Transit Authority
<http://www.mta.nyc.ny.us>
Niagara Frontier Transportation Authority
<http://www.nfta.com>
Sacramento Regional Transit District
<http://www.sacrt.com>
Santa Clara Valley Transportation Authority
(VTA)
<http://www.vta.org>
St. Louis Regional Transit
<http://www.bi-state.org>
Tri-County Metropolitan Transportation
District of Oregon
<http://www.tri-met.org>
Utah Transit Authority
<http://www.utabus.com>
Washington DC Metro
<http://www.wmata.com> | 
