摘要
利用中观交通流模型对城市快速路瞬时交通量进行预测,并在此基础上对车辆进行速度诱导控制,建立了以车辆总行程时间为目标函数的诱导优化模型,并利用C++实现了该模型。最后以上海南北高架南段西线为例建立了仿真场景,进行模型的参数标定与校验。通过统计分析与物理特性分析:速度诱导控制后,速度方差与均方差均有显著下降,说明速度诱导控制后,降低了路段上交通流的整体速度差异,提高了交通安全性。
The paper establishes the speed guidance model of urban expressway based on mesosimulation traffic flow model,which can provide the role of short-term traffic flow prediction.And the model regards gross vehicle travel time as the objective function to proceed optimized design and be implemented by C ＋ ＋.Then,it simulates and analyses the results based on the west line of the southern section of Shanghai North-South Elevated road.Simulation result shows that both speed variance and speed mean square error decrease remarkably.The speed guidance control reduces the overall difference of speed of the traffic flow that can improve traffic safety and the model is effective.
出处
《公路工程》
北大核心
2013年第4期70-74,共5页
Highway Engineering
基金
国家自然科学基金(61004113和71072027)
江苏省高校自然科学基金(12KJB580005)
关键词
中观仿真模型
速度诱导
LWR模型
快速路
瞬时交通预测
Meso-simulation model
Speed guidance
LWR model
Urban expressway
Shortterm traffic flow prediction
