摘要
研究了交通事件下拥堵蔓延消散的时空范围分析方法与模型,交通事件引发的拥堵会以某一初始蔓延速度向上游蔓延,直至达到最大蔓延边界后开始消散.通过对事件下拥堵蔓延速度的影响因素进行量化分析,建立了时变的拥堵蔓延速度模型;然后通过收集处理数据,进行参数估计;最后利用实际数据,进行了模型的实例应用,对不同情况下的交通拥堵蔓延消散规律进行了研究.该模型可预测交通事件下的交通拥堵边界和持续时间,便于交管部门制定缓堵策略.
A model is developed to depict the spatial and temporal characteristics of congestion propagation under a traffic incident. The congestion propagates from the incident sections to upstream at an initial speed and it dissipates when the congestion boundary gets maximal. According to quantitative analysis, a timevariant model of congestion propagation speed is proposed. Then the parameters of the model is fixed based the data. Finally, the spreading and dissipation of the congestion under different conditions are investigated using the model. It is proved that the model can predict the boundary and time of congestion under traffic incident. It is helpful the management of congestion.
出处
《交通运输系统工程与信息》
EI
CSCD
北大核心
2017年第5期179-185,213,共8页
Journal of Transportation Systems Engineering and Information Technology
基金
国家高技术研究发展计划(863计划)(2014AA110301)~~
关键词
城市交通
蔓延模型
蔓延速度
交通拥堵
拥堵蔓延边界
urban traffic
queue propagation model
congestion propagation speed
traffic congestion
congestion propagation boundary