American Association of State and Highway and Transportation Officials (AASHTO):
http://transportation1.org
American Planning Association – Transportation planning division:
www.apa-tpd.org
American Public Transport Association (APTA):
www.apta.com
American Road and Transportation Builders Association (ARTBA):
www.artba.org
ARRB Group:
www.arrb.com.au
Association of American Railroads (AAR):
www.aar.org
Hong Kong Society for Transportation Studies:
home.netvigator.com
Institute of Transportation Engineers:
www.ite.org
International Association for Travel Behavior Research (IATBR):
www.public.asu.edu
International Association of Public Transport (UITP):
www.uitp.org
International Association of Transportation Regulators:
www.iatr.org
International Union of Railways (UIC):
www.uic.asso.fr
North East Combined Transport Activists Roundtable (NECTAR):
www.ne-ctar.org.uk
Planning for Transport, Research and Computation (PTRC):
www.ptrc-training.co.uk
Regional Science Association International (RSAI):
www.regionalscience.org
Transportation Research Board:
www.trb.org
World Road Association (PIARC):
www.piarc.org
