信号控制T型交叉口自行车交通渠化方法研究

Research on the Channelization Method of Bicycle Traffic at Signalized T-Intersections

结合北京市三环辅路慢行系统整治工程,选取两处典型的T型交叉口对2种渠化方案整治实施前后进行对比分析,以非机动车交通量、非机动车侵占机动车道比率、非机动车违章左转交通量3个指标定量描述T型交叉口的交通运行情况及特征,分析渠化措施对交叉口交通运行的效果.结果显示:自行车道出入口彩铺块相对连续的自行车道彩铺设置更能明确地指引非机动车行驶路径,且也更经济;机非隔离护栏的设置能大幅降低非机动车与机动车的相互干扰,非机动车侵占机动车道比率分别下降了29.2%、9.4%;在自行车交通量上升的情况下,彩铺无法起到诱导自行车二次过街的作用,左转非机动车侵占率分别上升49.8%、49.5%,需进一步增设非机动车禁驶区标线.

Considering the slow line system renovation project of Beijing’s Third Ringfrontage roads,two typical T-intersections are selected to compare and analyze the two channelization schemes before and after the implementation.This paper describes the traffic conditions and characteristics of the T-intersection from the following three quantitative indicators,bicycle traffic volume,bicycle occupation rate and bicycle illegal turning left traffic volume,offering multi-dimensional analysis of the channelization schemes’orderly,safe and comfortable implementation effects on the intersections’traffic operation.The results show that compared with the continuous colored-paving on the whole bicycle road,it is more clearly and also economical to guide bicycle driving path by using colored-paving only at the entrance and exit of the bicycle road.The setting of the non-isolated fence can greatly reduce the mutual interference between the bicycle and the motor vehicle,and the bicycle occupancy of motorway rate has decreased by 29.2%and 9.4%respectively.In case of the rise in bicycle traffic,colored-paving has no effect on inducing bicycles to cross the street twice,the illegal turning left bicycle occupancy rate has increased by 49.8%and 49.5%respectively.It is necessary to further increase the marking of non-motor vehicle prohibited areas.