www.nhtsa.gov , National Highway Traffic Safety Administration (NHTSA)

www.etsc.eu , European Transport Safety Council (ETSC)

www.who.int , World Health Organization (WHO)

www.rospa.com , The Royal Society for the Prevention of Accidents (RoSPA)

www.cemt.org , European Conference of Ministers of Transport (ECMT)

www.trl.co.uk , Transport Research Laboratory (TRL)

www.dft.gov.uk , Department for Transport (DfT) UK