In an envisioned variable speed limit system, speed limits vary strategically and periodically in accordance with traffic and weather conditions to achieve better safety, efficiency, and environmental sustainability on a traffic network. For such a variable speed limit system, a three-objective, bi-level programming model is proposed to design optimal link-specific speed limits that minimize system travel time, number of expected accidents, and traffic exhaust emissions simultaneously for each specific strategic scenario. A solution framework is developed to solve the model that implements a nondominated sorting genetic algorithm and integrates various tools for performance evaluation. The proposed model and solution framework are demonstrated with the road network within the second ring road in Beijing.


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    Title :

    Optimization of Variable Speed Limits for Efficient, Safe, and Sustainable Mobility


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:
    Yang, Yanni (author) / Lu, Huapu (author) / Yin, Yafeng (author) / Yang, Hai (author)


    Publication date :

    2013-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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