- Dulles Area Transportation Association- Commuter information, programs and alternatives in the Western Dulles Corridor.www.datatrans.org
- The Intelligent Transortation Society of Virginia web site. www.itsva.org.www.itsva.org
- Dulles Corridor Rail Association is a non-profit membership organization formed to advocate rail in the Dulles Corridor by 2010.www.dullescorridorrail.com