RESEARCH PAYS OFF: NEW RAMP METERING ALGORITHM IMPROVES SYSTEMWIDE TRAVEL TIME

In an ongoing effort to smooth traffic flow, the Washington State Department of Transportation (WSDOT) has sponsored research since 1994 to improve its ramp metering algorithm. After lengthy development, careful modeling, and online testing, a new algorithm has proved so successful that WSDOT is using it in the greater Seattle area to meter more than 100 ramps on Interstates 5, 405, and 90, and on State Route 520. Details on its development, application and benefits are provided in this article.

• Record URL:
  http://onlinepubs.trb.org/onlinepubs/trnews/rpo/rpo.trn209.pdf
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• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07386826
• Supplemental Notes:
  • 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
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • O'Brien, A
• Publication Date: 2000-7

Language

• English

Media Info

• Features: Figures;
• Pagination: p. 38-39
• Serial:
  • TR News
  • Issue Number: 209
  • Publisher: Transportation Research Board
  • ISSN: 0738-6826

Subject/Index Terms

• TRT Terms: Algorithms; Applications; Benefits; Ramp metering; Research; Traffic flow; Travel time
• Geographic Terms: Washington (State)
• Subject Areas: Highways; Operations and Traffic Management; Research; I73: Traffic Control;

Filing Info

• Accession Number: 00796961
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 18 2000 12:00AM