A model predictive control (MPC) approach is presented to optimally coordinate variable speed limits for highway traffic. A safety constraint incorporated in the controller is formulated that prevents drivers from encountering speed limit drops larger than, say, 10 km/h. The control objective is to minimize the total time that vehicles spend in the network. This approach results in dynamic speed limits that reduce or even eliminate shock waves. To predict the evolution of the traffic flows in the network, which is required by MPC, an adapted version of the METANET model is used that takes the variable speed limits into account. The performance of the discrete-valued and safety-constrained controllers is compared with the performance of the continuous-valued unconstrained controller. It is found that both types of controllers result in a network with less congestion, a higher outflow, and hence a lower total time spent for drivers. For the benchmark problem, the performance of the discrete controller with safety constraints is comparable with the continuous controller without constraints.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Optimal Coordination of Variable Speed Limits to Suppress Shock Waves


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:
    Hegyi, A. (Autor:in) / De Schutter, B. (Autor:in) / Hellendoorn, J. (Autor:in)


    Erscheinungsdatum :

    01.01.2003




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Optimal coordination of variable speed limits to suppress shock waves

    Hegyi, A. / Bart De Schutter, / Hellendoorn, J. | IEEE | 2005




    Shock wave elimination/reduction by optimal coordination of variable speed limits

    Breton, P. / Hegyi, A. / De Schutter, B. et al. | IEEE | 2002


    SHOCK WAVE ELIMINATION/REDUCTION BY OPTIMAL COORDINATION OF VARIABLE SPEED LIMITS

    Breton, P. / Hegyi, A. / De Schutter, B. et al. | British Library Conference Proceedings | 2002