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Case Study on Traffic Safety Improvement of Access Point in Urban Main Road

机译:改善城市主干道出入口交通安全的案例研究

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There are many traffic safety problems in access points of urban main roads, such as traffic conflicts and serious congestions which must be solved. In this paper, the traffic characteristics of access points in urban main roads were explored. The traffic safety problems and the factors influencing traffic safety at access points of urban main roads were discussed, and the objectives and methods of improving traffic safety were determined. An access point of Jinguang Road in Langfang City in China was taken as the object of study. The traffic survey was performed, and the investigation data including traffic flow, vehicle speed, traffic delay, and traffic conflict were collected. On the basis of traffic flow analysis, traffic delay analysis, vehicle speed analysis, and traffic conflict analysis, areas with the most serious delays and the most serious traffic conflicts were selected, and the main influencing factors of traffic safety in the sampled road section were ultimately determined. With the purposes of reducing, the traffic delay as well as the density of traffic conflicts and separating the traffic conflicts, traffic safety improvements of enclosing the median isolation belt, setting up traffic signal lights, and widening road sections near access points had been applied, respectively, three traffic safety improvement plans of the sampled road section were developed. After the simulation and evaluation of the improvement plans, the expected effectiveness of traffic safety improvement had been determined. The most suitable improvement plan, which could guarantee traffic efficiency as well as avoiding traffic conflicts by separating in terms of space and time to the maximum extent, were selected.
机译:城市主干道出入口存在许多交通安全问题,例如交通冲突和严重的交通拥堵。本文探讨了城市主干道出入口的交通特性。探讨了城市主干道出入口的交通安全问题及影响交通安全的因素,确定了改善交通安全的目标和方法。以中国廊坊市金光路的出入口为研究对象。进行了交通调查,并收集了包括交通流量,车速,交通延误和交通冲突在内的调查数据。在交通流分析,交通延误分析,车速分析和交通冲突分析的基础上,选择了延误最严重,交通冲突最严重的区域,对影响路段交通安全的主要因素进行了分析。最终确定。为了减少交通延迟,减少交通冲突的密度和分离交通冲突,已改善了交通安全性,包括封闭隔离带,设置交通信号灯以及拓宽接入点附近的路段,分别制定了三段采样路段的交通安全改善计划。在对改善计划进行模拟和评估之后,确定了交通安全改善的预期效果。选择了最合适的改善计划,该计划可以通过在最大程度上将空间和时间分开来保证交通效率并避免交通冲突。

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