Highlights ► The total delay increases if the reduction of the number of vehicle stops is imposed in the optimization model. ► For our specific instances, slightly reducing the number of the vehicle stops may result in the reduction of CO at the expense of slightly increasing of CO2 and HC. ► When the reduction of a large number of vehicle stops is imposed in the optimization model, all of four pollutant emissions increase due to significantly increased delay.

    Abstract This paper investigates the environmental impacts of signal timing on vehicle emissions at a pre-timed signalized intersection. We use a two-stage approach: the first consists of developing optimization models that examine the trade-off between vehicle delays and the number of stops; and, based on the outcomes of the first stage, the second of estimating vehicle emissions using microscopic emission estimation models. A dynamic programming algorithm is developed to solve the optimization problems appearing in the first stage. A vehicle specific power approach is used to estimate the vehicle emissions near the intersection based on the results from the first stage.


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    Title :

    Investigation of the impacts of signal timing on vehicle emissions at an isolated intersection


    Contributors:
    Li, Jing-Quan (author) / Wu, Guoyuan (author) / Zou, Ning (author)


    Publication date :

    2011-01-01


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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