The problem of monitoring and regulating the freeway traffic flow to increase safety and efficiency is commonly considered to be a difficult task. In this paper, a variable speed signal-based control strategy is presented to solve an optimal control problem. The freeway traffic behaviour is described by means of a macroscopic model and the effects of the variable speed signalling are modelled with the introduction of suitable parameters. An optimal control problem over a finite-time horizon is stated with the aim of reducing the probability of freeway congestion. A suboptimal solution is found based on an on-off control logic, which depends on some switching parameters to be chosen.


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    Title :

    Optimal control of freeways via speed signalling1


    Contributors:
    Alessandri, A. (author) / Di Febbraro, A. (author) / Ferrara, A. (author) / Punta, E. (author)


    Publication date :

    1997-07-01


    Size :

    379966 byte



    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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