基于二元插值的混合车流高速公路车道划分方案研究

Research on Lane Division Scheme of Mixed Traffic Freeway Based on Binary Interpolation

针对因混合车流导致高速公路通行效率低下的问题,现提出通过调整路段车流量、混合车流比例等控制变量,探寻在何种车道划分方案下,特定路段的通行效率最优.结合VISSIM微观交通仿真软件对某单向四车道试验路段进行仿真验证,并对所得离散数据进行二元插值分析,根据特定控制变量组合情况,寻找最佳的车道划分方案.结果表明:车道划分方案1在四种车流量、各车型比例组合条件下,对应的总平均速率、大型货车平均速率总体略优于方案2、方案3;方案2、方案3在四种车流量、各车型比例组合条件下,每种车辆类型平均速率表现较为接近.

Aiming at the problem of low efficiency of expressway traffic caused by mixed traffic flow,this paper put forward a lane division scheme to find out the optimal traffic efficiency of a specific road section by adjusting control variables such as road traffic flow and mixed traffic flow ratio.Combining with the microscopic traffic simulation software,VISSIM,a one-way four-lane actual lane section was simulated,and the resulting discrete data was analyzed by binary interpolation.According to the combination of specific variables,the optimal lane division scheme was found.The results show that under the condition of four traffic volumes and the proportion combination of each vehicle types,the overall average speed and the average speed of truck in lane division scheme 1 are better than the same indexes in scheme 2 and scheme 3.Scheme 2 and scheme 3 show a relatively close average speed performance of each vehicle type under the conditions of four vehicle flows and the proportion of each vehicle type.