Electric bikes (e-bikes), including lightweight e-bikes with pedals and e-bikes in scooter form, are gaining popularity around the world because of their convenience and affordability. At the same time, e-bike-related accidents are also on the rise and many policymakers and practitioners are debating the feasibility of building e-bike lanes in their communities. By collecting e-bikes and bikes data in Shanghai City, the study first recalibrates the capacity of the conventional bike lane based on the traffic movement characteristics of the mixed bikes flow. Then, the study evaluates the traffic safety performance of the mixed bike flow in the conventional bike lane by the observed passing events. Finally, this study proposes a comprehensive model for evaluating the feasibility of building an e-bike lane by integrating the Analytic Hierarchy Process and fuzzy mathematics by considering the three objectives: capacity, safety, and budget constraint. The proposed model, one of the first of its kind, can be used to (i) evaluate the existing road capacity and safety performance improvement of a mixed bike flow with e-bikes and human-powered bikes by analyzing the mixed bike flow arrival rate and passing maneuvers, and (ii) quantify the changes to the road capacity and safety performance if a new e-bike lane is constructed. Numerical experiments are performed to calibrate the proposed model and evaluate its performance using non-motorized vehicles' trajectories in Shanghai, China. The numerical experiment results suggest that the proposed model can be used by policymakers and practitioners to evaluate the feasibility of building e-bike lanes.

翻译：电动自行车（包括带踏板的轻型电动自行车和踏板式电动自行车）因其便捷性和经济性在全球日益普及。同时，与电动自行车相关的事故也在增多，许多政策制定者和实践者正在讨论在社区建设电动自行车道的可行性。通过收集上海市的电动自行车与自行车数据，本研究首先基于混合自行车流的交通运行特性重新标定传统自行车道的通行能力。随后，通过观测超车事件评估传统自行车道中混合自行车流的交通安全性能。最后，本研究提出一种综合模型，通过整合层次分析法与模糊数学，综合考虑通行能力、安全性和预算约束三大目标，对建设电动自行车道的可行性进行评估。该模型作为同类首创，可用于：（i）通过分析混合自行车流的到达率与超车行为，评估当前道路通行能力及含电动自行车与人力自行车的混合车流的安全性能改善情况；（ii）量化新建电动自行车道对道路通行能力及安全性能带来的变化。通过基于中国上海市非机动车轨迹数据的数值实验，对模型进行标定与性能评估。数值实验结果表明，该模型可为政策制定者和实践者评估建设电动自行车道的可行性提供参考依据。