EVALUATION OF ENTRANCE RAMP CONTROL ON A SIX-MILE FREEWAY SECTION /WITH DISCUSSION/

RAMP CONTROL AND RAMP METERING WERE STUDIED TO IMPROVE FREEWAY OPERATIONS BY ELIMINATING RAMP CLOSURE /BY SPREADING THE EXCESS DEMAND OVER MORE RAMPS/. A TRIAL RAMP CONTROL SIGNAL INSTALLATION WAS EVALUATED. THE CONTROL PLAN REDUCED THE GULF FREEWAY CONGESTION DURING THE MORNING PEAK PERIOD. OVERALL FREEWAY TRAVEL TIME WAS REDUCED ABOUT 25 PERCENT. THE CONTROL PLAN TESTED PRODUCED LITTLE ADVERSE EFFECT ON THE ARTERIAL STREET SYSTEM NEAR THE GULF FREEWAY. THE MORNING PEAK HOUR VOLUME DECREASED ABOUT 5 PERCENT DURING THE CONTROL STUDY. THE DEMAND-CAPACITY TECHNIQUE PROVED A GOOD METHOD FOR DETERMINING A FIXED-TIME CONTROL PLAN. PUBLIC ACCEPTANCE OF THE CONTROLS WAS GOOD AND THE STUDY INDICATES THAT THE MOTORISTS ARE PREPARED TO ACCEPT A FREEWAY CONTROL SYSTEM ON A CONTINUING BASIS.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1967/157/157-002.pdf
• 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:
  • Pinnell, Charles
  • DREW, DONALD R
  • McCasland, William R
  • Wattleworth, Joseph A
• Discussers:
  • Athol, Patrick J
  • Kendall, Hugh C
  • Covault, Donald O
  • Pinnell, Charles
  • DREW, DONALD R
  • McCasland, William R
  • Wattleworth, Joseph A
• Publication Date: 1967

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 22-76
• Monograph Title: Freeway traffic characteristics and control
• Serial:
  • Highway Research Record
  • Issue Number: 157
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Freeway operations; Interchange ramps; Peak hour traffic; Reduction (Chemistry); Traffic congestion; Traffic control; Travel time
• Old TRIS Terms: Freeway entrances and exits; Freeway ramps; Metering; Reduction
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225136
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jun 5 1994 12:00AM