In order to precisely measure the level of service (LOS) of urban cycle-pedestrian shared road, this paper focuses on urban roads without physical separation or height difference. Firstly, by summarizing some influencing factors about the mixed traffic flow, the paper designs experimental scenarios. Five typical shared-roads in Nanjing are then selected for the specific traffic investigation. Based on the collected traffic flow information and the road users' perception, this paper sets up the LOS models considering the effective road widths, density of road hindrances and intensity of traffic conflicts, based on which 6 division standard of service level are proposed. The results of sensitivity analysis show that the service level of mixed traffic flow would improve with the increment of road' s effective widths and decrease of main cycle flow, while the proportions of main/opposing pedestrian flow have significant impact on cycle's running status.%以不存在物理分隔或高差的步行和自行车共享道为研究对象,定量描述自行车和步行交通混合运行的服务水平.在分析共享道服务水平影响因素的基础上,设计实验方案,选择南京市5条典型共享道开展交通调查.以实测数据为基础,基于道路使用者对道路运行状况的感知评价,建立包含共享道有效宽度、障碍物密度、交通冲突强度等显著影响指标的共享道服务水平模型,并提出服务水平的6级划分标准.模型敏感性分析结果表明,随着共享道有效宽度的增加和自行车流量的降低,共享道服务水平提高,主向和对向行人比例变化对自行车运行状态有显著影响.
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