DEVELOPING DENSITY CONTROLS FOR IMPROVED TRAFFIC OPERATIONS

TRAFFIC THROUGH A SINGLE-LANE ROAD SECTION WITH A BOTTLENECK AT OUTPUT IS CONSIDERED AS A SYSTEM INVOLVING INPUT FLOW, SECTION DENSITY, OUTPUT SPEED, AND OUTPUT FLOW. EFFECTS OF OUTPUT FLOW ON OUTPUT SPEED ON SECTION DENSITY, AND SECTION DENSITY ON INPUT FLOW ARE SHOWN. FOUR CASE STUDIES ARE DESCRIBED, EACH WITH DIFFERENT PATTERNS AND LEVELS OF TRAFFIC PRODUCTION. CONSISTENT RELATIONS AMONG SECTION DENSITY, OUTPUT SPEED, AND OUTPUT FLOW ARE OBSERVED. FLOW IS AT A MAXIMUM WHEN OUTPUT SPEEDS ARE IN MIDRANGE. OUTPUT SPEEDS ARE A DELAYED INVERSE FUNCTION OF SECTION DENSITY. THE EFFECT OF AN EARLY AUTOMATIC SYSTEM FOR CONTROLLING SECTION DENSITY BY LIMITING INPUT FLOW BASED ON MEASURING OUTPUT SPEEDS IS DESCRIBED. /AUTHOR/

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  • Supplemental Notes:
    • Paper sponsored by Committee on Freeway Operations and presented at the 45th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
  • Authors:
    • Foote, Robert S
    • Crowley, Kenneth W
  • Publication Date: 1967

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 24-37
  • Monograph Title: Traffic flow characteristics
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00227654
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 2004 2:36AM