城市大型活动车队行驶特征与交通影响分析

Investigation of Platoon's Driving Characteristics & Traffic Impact

摘要:

为保证城市大型活动专用大巴车队行驶过程中的安全稳定，防止车队出现运行紊乱、前后脱节的现象，基于车流波动理论，以平均车辆延误、最小发车间隔、尾车追及距离为指标，分析车队长度、发车间隔、运行速度对于车队通过瓶颈路段运行状况的影响，并讨论大巴车队通过交叉口时对社会车辆产生的延误。最后，以深圳“大运会”开幕式为例，进行实证研究。研究结果表明，车队通过瓶颈路段的行驶稳定性随着车队长度、正常段与瓶颈段行驶速度差的提高而降低；交叉口社会车辆延误随着车队长度与发车间隔的增大而减小。

Abstract:

To ensure the security of the platoons used in urban mega-event and to prevent platoons from driving disorder, the evaluation indicators were selected, including average vehicle delay, minimum departure interval and chasing distance. On the basis of traffic flow wave theory, the indicators were used to analyze the impact of driving condition that was resulted from the changing of platoons’ length, departure interval and speed when going through the bottleneck. The social vehicles’ delay caused by the platoons when passing through the intersection was also discussed. At last, the opening ceremony of Shenzhen Universiade was taken as an example. The result shows the increasing length and speed difference that between bottleneck and normal section has a negative impact on driving stability. It is also found that intersection delay decreasing when the platoon’s length and departure interval increase.