We present a model predictive control (MPC) approach to optimally coordinate variable speed limits for highway traffic. The basic idea is that dynamic speed limits con create traffic conditions where shock waves can damp out faster. The control objective is to minimize the total time that vehicles spend in the network. For the prediction of the evolution of the traffic flows in the network we use an adapted version of the METANET model that takes the variable speed limits into account. The coordinated control results in a network with less congestion, a higher outflow, and a lower total time spent. In addition, the receding horizon approach of MPC results in an adaptive, online control strategy that automatically takes changes in the system parameters into account.


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    Title :

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


    Contributors:
    Breton, P. (author) / Hegyi, A. (author) / De Schutter, B. (author) / Hellendoorn, H. (author)


    Publication date :

    2002-01-01


    Size :

    474999 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    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



    Optimal coordination of variable speed limits to suppress shock waves

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


    Optimal Coordination of Variable Speed Limits to Suppress Shock Waves

    Hegyi, A. / De Schutter, B. / Hellendoorn, J. | Transportation Research Record | 2003