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首页> 外文会议>COTA international conference of transportation professionals >Understanding the Impacts of Interchanges on the Traffic Status of Urban Road Networks Using Microscopic Fundamental Diagrams
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Understanding the Impacts of Interchanges on the Traffic Status of Urban Road Networks Using Microscopic Fundamental Diagrams

机译：使用微观基本图了解互换对城市道路网络交通状况的影响

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The effects of interchanges on the macroscopic traffic status of road networks is not very clear according to the practice data. The existing research and survey data shows that the macroscopic fundamental diagram (MFD) is an attribute of the urban road network. Therefore, the features of MFD can help to understand the impacts of interchanges on the traffic status of a road network. Firstly, road networks with 20 intersections and various scenarios of interchange locations are simulated using micro-simulation software VISSIM. Secondly, unsaturated, saturated, and oversaturated traffic statuses of road networks with different interchange numbers and locations are simulated. Thirdly, piecewise linear fitting is used to describe MFD based on cluster analysis. Finally, the impacts of interchange numbers and locations on urban road network are analyzed by the features of MFD. The result shows that the number and location of interchanges have influence on the traffic status of urban road networks.
机译：根据实践数据，互换对道路网络宏观交通状况的影响不是很明显。现有的研究和调查数据表明，宏观基础图（MFD）是城市道路网的一个属性。因此，MFD的功能可以帮助您了解立交对路网交通状况的影响。首先，使用微仿真软件VISSIM对具有20个交叉路口和各种互换位置的场景的路网进行了仿真。其次，模拟了具有不同换乘次数和位置的路网的非饱和，饱和和过饱和交通状况。第三，基于聚类分析，采用分段线性拟合来描述MFD。最后，通过MFD的特征分析了换乘数量和位置对城市道路网的影响。结果表明，立交桥的数量和位置对城市道路网的交通状况有影响。

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