Highlights Road pricing is a potential tool for controlling traffic congestion and pollution. We study cordon tolls using the dynamic traffic network simulator METROPOLIS. A Gaussian dispersion model is used to compute the distribution of pollution. Step tolls have only a small advantage over flat tolls for pricing emissions. Health effects vary with location relative to the cordon(s) and wind direction.

    Abstract Road traffic is a major contributor to air pollution which is a serious problem in many large cities. Experience in London, Milan, and Stockholm indicates that road pricing can be useful in reducing vehicle emissions as well as congestion. This study uses a dynamic traffic network simulator that models choices of mode, departure time, and route to investigate the effectiveness of tolls to target emissions and congestion externalities on a stylized urban road network during a morning commuting period. The spatial distribution of four pollutants is calculated using a Gaussian dispersion model that accounts for wind speed and direction. Single and double cordon tolls are evaluated, as well as flat tolls that do not change during the simulation period and step tolls that change at half-hourly intervals. The presence of emissions externalities raises optimal toll levels, and substantially increases the welfare gains from tolling, although the proportional advantage of step tolls over flat tolls is lower than if congestion is the only externality. The individual welfare-distributional effects of tolling vary strongly with residential and workplace locations relative to the cordon, and also differ for the upwind and downwind sides of the city.


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    Titel :

    Pricing vehicle emissions and congestion externalities using a dynamic traffic network simulator


    Beteiligte:


    Erscheinungsdatum :

    2022-04-24


    Format / Umfang :

    24 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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