Links to international transportation groups:

• Carriers & operators, e.g. Air Canada
  http://www.aircanada.ca/home.html
  
  
• Canadian Transportation Agency, e.g. CTA
  http://www.cta-otc.gc.ca/
  
  
• International Organizations, ECMT
  http://www.cemt.org/
  
  
• The United States Transportation Research Board
  http://www.trb.org
  
  
• The American Public Tranportation Association e.g.APTA
  http://www.apta.com
  
  
• Association of Australian and New Zealand Road Transport and Traffic Authorities e.g.AustRoads
  http://www.austroads.com.au/
  
  
• Reliable Accessibility e.g. Connekt
  http://www.connekt.nl/