2SOLOMON D. Accidents on main rural highways related to speed, drivers, and vehieleER~. Washington:Bureau of Public Roads, 1964.
3FILDES B N, RUMBOLD G, LEENING A. Speed behavior and drivers attitude to speeding[R]. Sydney:Monash University, 1991.
4LIU G, POPOFF AI. Provincial-wide travel speed and traffic safety study in Saskatchewan[J]. Transportation Research Record 1595,1997 : 8--13.
5BARUYA A. Speed-accident relationships on different kinds of European roads [R]. London: Transportation Research Laboratory, 1998.
6Texas Transportation Institute. Design speed, operating speed,and posted speed survey[R]. Texas: Texas A & M University, 1995.
7GARBER NICHOLAS J, GADIRAJU R. Impacts of differential speed limits on the speed of traffic and the rate of accidents[J]. Transportation Research Record 1375,1995:17 22.
8HARKEY D, MERA R. Safety impacts of different speed limits on cars and trucks[R]. Washington: Federal Highway Administration, 1994.