【摘要】 对于典型的流量－速度－密度交通流三维模型，由不同的速度－密度关系式，建立易于理解和接受，且更偏重于安全可靠的流量－密度和流量－速度关系模型，从而为交通分析和控制管理提供依据。更多还原

【Abstract】 For the typical 3 D model of traffic speed density, the establishment of flow density and flow speed relation model from different speed density relationship would be more understandable and acceptable, and safer and reliable. Thus, the model has contributed a better foundation for traffic analysis, control and management.更多还原