双向自行车道设置条件及关键参数研究

Setting Conditions and Key Parameters for Two-way Separated Bicycle Lane Design

我国自行车道单向通行是导致自行车绕行距离较远、逆行等问题产生的重要原因,降低了出行的安全性和便利性.针对上述问题,本文提出了设置双向自行车道的解决方案.结合我国道路交通的实际情况,基于路网条件及交通需求因素重点分析了双向自行车道的设置条件;同时对双向自行车交通流进行实地调查和数据拟合,得到了双向自行车道的横向净空和宽度要求;进一步对双向自行车道的行驶方向、车道断面形式和交叉口过街形式进行设计,给出了适合我国道路交通特点的双向自行车道设计参数参考值.本文研究结果可以为新建、改扩建道路双向自行车道的规划和设计提供参考.

Providing one-way separated bicycle lanes on each side of a two-way street may draw a lot of inconveniences and problems, such as making a long distance detour for bicyclists across streets, as well as riding in discordance with the traffic laws（e.g., against the traffic flow, in pedestrian zones, on sidewalks）.The conception of two-way separated bicycle lane（TWSBL） is introduced to deal with this phenomenon.The applicable circumstances of TWSBL, focused on the road condition and traffic demand, have been analyzed. The field survey is done to acquire the two way bicycle flow characteristics. And then the lateral clearance and widths of TWSBL are obtained through data fitting. Meanwhile, the paper analyzes the directional characteristic, separation forms and intersection design of TWSBL. Finally, reference values of TWSBL design parameters suitable for China are proposed. The results could be helpful and referential to the planning and design for TWSBLs in new construction and expansion projects in the future.