摘要
交织车辆在车道变换过程中所占用道路资源与非交织车辆是不同的,考虑这一因素对服务水平的影响,提出了快速路交织区交通相对密度的概念,及相对密度的计算公式,以此作为评价快速路交织区服务水平的依据。该方法将密度和交织比参数作为评价服务水平指标,通过确定快速路交织区临界密度值,给出了不同设计速度条件下快速路交织区服务水平评价标准,与过去采用的速度或密度参数评价服务水平的方法相比较,分析结果表明其更具合理性。
The intertwined vehicles and non-intertwined vehicles use different road resources in the process of lane-changing. With this factor into consideration, a concept of relative density and its calculation formula in weaving section of expressway were proposed, which provided a base for evaluating the service level of weaving section of expressway. This method used density and weaving ratio as the indices of service level evaluation and gave evaluation standards of service level according to different theoretical velocity, through the identification of critical density at weaving section. The result proves reasonable, compared with the former methods, which utilize velocity and density as the evaluation indices.
出处
《交通与计算机》
2007年第6期52-55,共4页
Computer and Communications
关键词
交织区
城市快速路
服务水平
交通密度
weaving section
urban expressway
service level
traffic density
