4Transportation Research Board. Highway Capacity Manual [ M ]. Transportation Research Board, Washington, D. C. ,2000.
5李江.交通工程学[M].北京:人民交通出版社,2000.
6JESSEN D R,SCHURR K S,MCCOY P T. Operating speed prediction on crest vertical curves of rural two-lane highways in Nebraska[J].{H}TRANSPORTATION RESEARCH RECORD,2001,(1751):67-75.
7MISAGHI P,HASSAN Y. Modeling operating speed and speed differential on two-lane rural roads[J].Journal of Transporatation Engineering,2005,(06):408-418.
