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Two Proposals To Improve Freeway Traffic Flow

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  • Karaaslan, Ufuk
  • Varaiya, Pravin
  • Walrand, Jean

Abstract

The following two proposals are presented: (1) Vehicles are organized in platoons in which the lead car is manually driven and the other cars are under automatic spacing (headway) control. A plausible model of the resulting flow of traffic indicates that, for an average platoon size of 20, the capacity of the freeway increases by a factor of four. (2) A macroscopic model of freeway traffic congestion along with a control law for reducing congestion is presented. Simulation of the resulting closed loop model indicates a dramatic reduction in congestion.

Suggested Citation

  • Karaaslan, Ufuk & Varaiya, Pravin & Walrand, Jean, 1990. "Two Proposals To Improve Freeway Traffic Flow," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt2451z0qx, Institute of Transportation Studies, UC Berkeley.
    • Handle: RePEc:cdl:itsrrp:qt2451z0qx
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    References listed on IDEAS

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    1. Sheikholeslam, Shahab & Desoer, Charles A., 1989. "Longitudinal Control Of A Platoon Of Vehicles. I, Linear Model (ucb/erl M89/106)," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt7ns408fp, Institute of Transportation Studies, UC Berkeley.
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    Cited by:

    1. Barth, Matthew & Norbeck, Joseph, 1996. "Transportation Modeling For The Environment: Final Report," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt7xp4z5hv, Institute of Transportation Studies, UC Berkeley.
    2. Varaiya, P. P. & Shladover, Steven E., 1991. "Sketch Of An Ivhs Systems Architecture," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt5jh5n9w1, Institute of Transportation Studies, UC Berkeley.
    3. Linnartz, Jean-paul M. G. & Diesta, Rolando F., 1996. "Evaluation Of Radio Links And Networks," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt7d4280mc, Institute of Transportation Studies, UC Berkeley.
    4. Chira-Chavala, Ted & Yoo, S. M., 1992. "Feasibility Study Of Advanced Technology Hov Systems: Volume 1: Phased Implementation Of Longitudinal Control Systems," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt2wh2v2vc, Institute of Transportation Studies, UC Berkeley.
    5. Varaiya, Pravin, 1994. "Models, Simulation, And Performance Of Fully Automated Highways," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt1p10g5r4, Institute of Transportation Studies, UC Berkeley.
    6. Hall, Randolph W., 1991. "Time Benefits of New Transportation Technologies: The Case of Highway Automation," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt7g65723v, Institute of Transportation Studies, UC Berkeley.
    7. Chien, C. C. & Ioannou, P. & Chu, C. K., 1995. "Fuzzy Traffic Density Homogenizer For Automated Highway Systems," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt7f73n4fm, Institute of Transportation Studies, UC Berkeley.
    8. Barth, Matthew J. & Norbeck, Joseph M., 1994. "Transportation Modeling For The Environment," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt4m1906gn, Institute of Transportation Studies, UC Berkeley.
    9. Chien, C. C. & Zhang, Y. & Stotsky, A. & Dharmasena, S. R. & Ioannou, P., 1995. "Macroscopic Roadway Traffic Controller Design," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt9r3050ff, Institute of Transportation Studies, UC Berkeley.

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