T型错位交叉口的精细化交通组织

Refined Traffic Organization of T-Shaped Dislocated Intersections

针对信号优化效果不明显的特定T型错位交叉口,根据实时的交通流情形,进行精细化交通组织,分析设置直行待行、阶梯型停车线的可行性,仿真对比了设置前后道路交通效益指标。结果表明,充分利用交叉口的时空资源,合理设置路口直行待行区及阶梯型停车线,有利于提升交通通行能力,减少车辆延误、排队长度,以及提高进口车道的利用率。

Due to the unreasonable vehicular operation of T-shaped dislocated intersections,the refined traffic organization based on real-time traffic scenarios is presented for the intersections,such as setting up the through-movement waiting area and dividing the stepped stop line.Meanwhile,a before-after study with the software of VISSIM is implemented in order to compare the benefit indexes of road traffic.The simulation results indicate that there are significant efficiency improvements of T-shaped dislocated intersections with the refined traffic organization.The optimized organization serves to reasonably allocate the spatiotemporal resources,enhance the traffic capacity,reduce the vehicle delay,decrease the queue length,as well as improve the utilization rate of the entrance lane.