1. Advocates for Highway and Auto Safety; www.saferoads.org/general/highlights.html
2. Asia Pulse: Toyota: Other Automakers to Begin Automatic Emergency Call Service. Nihon Keizai Shimbun, Nationwide Financial News, August 24, 1998
3. Boyle J, Dienstfrey S: 1996 Motor Vehicle Occupant Safety Survey, vol. 4, Crash Injury and Emergency Medical Services Report. National Highway Traffic Safety Administration, DOT HS 808-633, November 25, 1997
4. Automatic crash notification;Champion;AirMed,1998