CONTROL OF A FREEWAY SYSTEM BY MEANS OF RAMP METERING AND INFORMATION SIGNS - WITH DISCUSSION

A SIMPLE RAMP-METERING STRATEGY IS DEVELOPED FOR THE CONTROL OF A CONGESTED FREEWAY SYSTEM. IF AN ALTERNATE ROUTE CAN BE DEFINED PARALLEL TO THE FREEWAY, A SET OF INFORMATION SIGNS CAN BE ERECTED AT CHOICE POINTS. THESE ARE POSITIONS WHERE A MOTORIST MUST DECIDE WHETHER TO ENTER THE FREEWAY OR CONTINUE ON THE ALTERNATE ROUTE. A STRATEGY FOR THE INFORMATION SIGN DISPLAYS IS DEVELOPED AND RESULTS IN EQUAL TRAVEL TIME ON BOTH ALTERNATE ROUTE AND FREEWAY. FINALLY, IT IS SHOWN THAT VOLUME FLUCTUATIONS CAN BE TAKEN INTO ACCOUNT IF THE FREEWAY SYSTEM IS CONTROLLED IN REAL TIME. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1972/388/388-006.pdf
• Supplemental Notes:
  • Sponsored by Committee on Freeway Operations. 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:
  • Pretty, R L
• Discussers:
  • Whitson, Robert H
  • Yagoda, H N
• Publication Date: 1972

Media Info

• Media Type: Digital/other
• Features: Figures;
• Pagination: pp 62-72
• Monograph Title: Freeway operations and control
• Serial:
  • Highway Research Record
  • Issue Number: 388
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Interchange ramps; Signs; Traffic control; Travel time
• Old TRIS Terms: Freeway ramps
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226400
• Record Type: Publication
• Report/Paper Numbers: No 390 PP 36-9
• Files: TRIS, TRB
• Created Date: Sep 19 1972 12:00AM