1. Braver, E.R., 2001. Race, Hispanic origin, and socioeconomic status in relation to motor vehicle occupant death rates and risk factors among adults. Insurance Institute for Highway, Arlington, VA. Submitted for publication.
2. Federal Highway Administration, 1998. Comprehensive truck size and weight study; vol. III scenario analysis, chap. 8 safety (draft report). US Department of Transportation, Washington, DC.
3. Federal Highway Administration, 2000. Highway Statistics 1999. US Department of Transportation, Washington, DC. Available at: http://www.fhwa.dot.gov/ohim/hs99/tables/vm1.pdf. Last accessed: January 25, 2001.
4. International Bridge, Tunnel, and Turnpike Association, 1996. 1995 toll industry statistics. Washington, DC.
5. International Bridge, Tunnel, and Turnpike Association, 1997. 1996 toll industry statistics. Washington, DC.