1. National Highway Safety Administration (NHTSA) 2006 preliminary data, per USDOT NHTSA press release dated June 1, 2007.
2. U.S. Department of Transportation, National Highway Transportation Safety Administration, The Economic Impact of U.S. Motor Vehicle Crashes, 2000, DOT-HS-809-446 (Washington, DC: NHTSA, 2002).
3. Norman, D., The Psychology of Everyday Things (New York: Basic Books, 1988).
4. Sivak, M., The information that drivers use: is it indeed 90% visual? Perception, 25, pp. 1081–1089 (1996).
5. Dewar, R.E., In-vehicle information and driver overload. International Journal of Vehicle Design, 9, pp. 557–564 (1988).