7P Misaghi, Y Hassan. Modeling Operating Speed and Speed Differential on Two- lane Rural Roads [R]. Transporatation Research News, 1999.
8Federal HighwayAdministration. Speed prediction for two-lane rural highways[R]. Washington: Federal Highway Administration, 2000.
9[4]Milliken P,de Pont J.The effect of cross-sectional geometry on heavy vehicle performance and safety.Transfund New Zealand Research Report 263[M].Wellington,New Zealand:[s.n.],2004:9-10.
