9Stephanedes V J, Michalopoulos P G, Plum R A. Im- proved estimation of traffic flow for real-time control [ J ]. Transportation Research Record, 1981,79 (5) :28-39.
10Smith B L, Demetsky M J. Traffic flow forecasting:Com- parison of modeling approaches [ J . Journal of Transpor- tation Engineering, 1997,123 (4) : 261-265.