• Harmer E. Davis Transportation Library
  http://www.lib.berkeley.edu/ITSL/
• Northwestern University Transportation Library (NWUTL)
  http://www.library.northwestern.edu/transportation/
• National Transportation Library
  http://ntl.bts.gov/

• Metro Regional Government
  http://www.metro-region.org/
• Multnomah County
  Land Use & Transportation Program
  http://www2.co.multnomah.or.us/jsp/Public/EntryPoint?ch=c3da3c7e50f96010VgnVCM1000003bc614acRCRD
• City of Portland. Office of Transportation
  http://www.portlandonline.com/transportation/
• City of Vancouver, Wash. Transportation Division
  http://www.ci.vancouver.wa.us/transportation/
• Southwest Washington Regional Transportation Council
  http://www.rtc.wa.gov/
• Oregon Department of Transportation
  http://www.oregon.gov/ODOT/
• Washington State Transportation Department
  http://www.wsdot.wa.gov/
• Transportation Coalition Choices
  http://www.transportationchoices.org/
• Clark County, Washington - Transportation Improvement Programs
  http://www.co.clark.wa.us/tip/
• Washington Department of Licensing
  http://www.dol.wa.gov/

• Lloyd District Transportation Management Association
  http://www.ldtma.com/index.html
• Westside Transportation Alliance
  http://www.wta-tma.org/
• Tualatin Transportation Association
  http://www.tualatinchamber.com/whynot/tma.htm

United States Federal Transportation Sites

• U.S. Bureau of Transportation Statistics (BTS)
  http://www.bts.gov/
• U.S. Dept. of Transportation (DOT)
  http://www.dot.gov/
• Federal Highway Administration (FHWA)
  http://www.fhwa.dot.gov/
• Federal Railroad Administration (FRA)
  http://www.fra.dot.gov/
• Federal Transit Administration (FTA)
  http://www.fta.dot.gov/
• National Highway Traffic Safety Administration (NHTSA)
  http://www.nhtsa.dot.gov/
• Transportation Research Board (TRB)
  http://gulliver.trb.org/