Two-Class Emission Traffic Control for Freeway Systems

Abstract In the paper a traffic control strategy based on ramp metering is proposed in order to reduce traffic emissions in freeway stretches. Such strategy is devised to take into account that two vehicle classes are present in the freeway (cars and trucks) and that they are separately controlled. The simulation analysis developed in the paper shows, first of all, that the proposed control strategy is able not only to reduce traffic emissions in the freeway but also to reduce the congestion, by decreasing the total time spent by vehicles in the system. Moreover, the effectiveness of the two-class ramp metering control is shown on different traffic scenarios, that are deeply analysed and discussed in the paper.

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