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针对大型货车产生的移动瓶颈现象,通过分析移动瓶颈流量-密度曲线,从车流控制角度提出采取车道拓宽和货车车道限制措施来消除不利影响,并应用微观仿真软件TSIS进行仿真实验研究。以投资-效益比最优为原则,采用成本-效果图评价不同拓宽方案的设置效果;对于货车车道限制措施,则用车辆换车道次数等指标进行分析,得到不同流量和货车比例下应采取的合理改善措施。
Aiming at the mobile bottleneck caused by large trucks, this paper analyzes the flow-density curve of mobile bottleneck, and proposes measures of widening the lane and limiting the lane of the truck from the traffic flow control point of view to eliminate the adverse effects. The simulation experiment is carried out by using the microscopic simulation software TSIS. In order to optimize the investment-benefit ratio, the cost-renderings should be used to evaluate the effect of different plans to widen the range. For lane-limited measures, the number of lanes should be used to analyze the different traffic volumes and truck ratios Reasonable improvement measures.