基于路径诱导的高负荷路网微循环组织研究

Study on Traffic Micro-circulation Organization in Heavy Traffic Networks Based on Route Guidance

路径诱导是区域交通微循环组织的重要手段之一。以路网诱导的交通流效用最大为目标,兼顾高低不同负荷的车流有效规划路径上的信息诱导板数量,并利用遗传算法对模型进行了求解,得到了信息板的优化设置位置;结合中关村西区实例,首先规划了高低不同负荷的车流有效路径,并计算得到信息板设置的优化位置,然后利用VISSIM仿真,比较了路网的改善效果。仿真表明:改善后,中关村区域主干道的交通负荷降低,区域的交通旅行时间减少19.3%,延误减少38.6%,而区域内部的次干道和支路利用率增加,达到了微循环组织利用支路分担主干道交通压力的目的。

The route guidance is an important method of regional traffic micro-circulation organization.To maximize the traffic effectiveness based on the route guidance was regarded as the target,meanwhile the amount of information boards was considered at the efficient and planned paths with different load.And the Genetic Algorithm was used to solve the model,acquiring the optimization position of information boards.Considering the example of western area of Zhongguancun,the effective paths with different loads were planned at first,and the locations of information boards were optimized,then the improvement effect was gotten by the simulation VISSIM.The simulation shows that the traffic loading of the main road in the western area of Zhongguancun is reduced,the regional traffic time and delays are respectively reduced 19.3% and 38.6%.Conversely,the availability of the secondary main road and branches in regional interior is increased,which verifies that the traffic pressure of the main road is shared by the branches in the regional traffic micro-circulation organization.