城市快速路交织区内拥挤的交通流特性与普通快速路设施不同,强烈的换道需求和复杂时变的路况影响驾驶员的判断.对拥挤的交织区的交通仿真需要根据研究区域拥挤交通流的特点正确选择跟驰模型和换车道模型,操作方法上要求正确处理减速区域和冲突区域路权分配规则.本文讨论拥挤交织区交通仿真模型的建立和优化方法,在SUMO微观交通仿真平台建立了一段快速路立交桥上的交织区域的仿真模型.根据该交织区的交通流特点对仿真平台所用的换车道模型进行了优化设计,开发了模型参数的自动化校正程序对仿真参数进行了校正.%Traffic stream characteristics in over saturated weaving sections between closely spaced ramps on urban expressway are different from which on general freeway facilities because of rigid demand to lane change and complex traffic behavior of vehicles.When simulating weaving area traffic it is needed to carefully select car following model and lane changing model based on area traffic characteristics and the method to handle right of way rules in deceleration area and conflict area should be designed in appropriate manner from operational point of view.In this paper simulation models of oversaturated weaving sections and optimization methods were discussed and a simulation model of an interchange weaving section were built using SUMO simulation platform.Original SUMO lane change model was optimized and automatic model validation software was developed.
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