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7月31日下午3:30加州大学伯克利分校赵冰玉博士澳门新京匍娱乐通知

水资源与水电工程科学国家重点实验室   时间: 2019-07-28 16:37:48    文章来源:澳门新京匍娱乐 访问次数: 427    返回澳门新京匍娱乐

报告题目:Trip-Based Model for City-Scale Traffic Simulation: A Case Study on San Francisco

报告人:赵冰玉 博士加州大学伯克利分校

邀请人:曹子君 教授

时  间:2019年7月31日(星期三)下午3:30—5:00

地  点:水利水电学院八教8319会议室


报告简介:  

      Traffic simulation is a powerful tool to understand the performance of the transportation system under various normal operation and disaster evacuation scenarios. In the first part of this talk, I will present a trip-based city-scale traffic simulation built for the city of San Francisco. The model features a detailed road network obtained from the OpenStreetMap and hour-long simulation time step to capture realistic variations in traffic conditions. The travel demand data are inferred from the Uber/Lyft pickup and drop-off counts published by the local transportation authorities. Traffic speed variations due to vehicle interactions are determined according to a simplified volume-delay macroscopic relationship, which is more efficient than applying microscopic rules (e.g., car following)   for evaluating city-scale traffic conditions. Preliminary validation of the results is conducted by comparing its results with a published model. Overall, the simulation has been demonstrated to run efficiently and produce reliable results. Then in the second part of this talk, a few ongoing projects based on the above traffic simulation tool will be presented, including applications in disaster evacuation, multi-infrastructure interaction and emission/pollution evaluation. The city-scale traffic simulation, together with its planned future improvements, is expected to greatly facilitate the policy testing and operational/emergency planning efforts on urban developments.


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