Two Proposals to Improve Freeway Traffic Flow

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.

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  • Supplemental Notes:
    • For availability, refer to: Institute of Transportation Studies, University of California, Berkeley. Revised 20 December 1990.
  • Corporate Authors:

    University of California, Berkeley

    Department of Electrical Engineering and Computer Sciences
    Berkeley, CA  United States  94720

    Program on Advanced Technology for the Highway (Calif.)


    University of California, Irvine

    Institute of Transportation Studies
    4000 Anteater Instruction and Research Building
    Irvine, CA  United States  92697

    California Department of Transportation

    1120 N Street
    Sacramento, CA  United States  95814
  • Authors:
    • Karaaslan, Ufuk
    • Walrand, Jean
    • Varaiya, P P
  • Publication Date: 1990


  • English

Media Info

  • Media Type: Digital/other
  • Pagination: 20 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00796758
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Report/Paper Numbers: UCB-ITS-PRR-90-6
  • Created Date: Aug 24 2000 12:00AM