AN ANALYSIS OF DIAMOND INTERCHANGE SIGNALIZATION

A SYSTEMATIC APPROACH TO THE SIGNALIZATION OF DIAMOND INTERCHANGES IS PRESENTED. ATTENTION IS DIRECTED SO THAT THE RESULTING SIGNALIZATION CONCEPTS ARE APPLICABLE TO THE REAL-TIME CONTROL OF DIAMOND INTERCHANGES, WHICH IS THE ULTIMATE OBJECTIVE OF THIS PROJECT. THIS PAPER PROVIDES A CRITICAL REVIEW OF THE EXISTING PRACTICES FOR DIAMOND INTERCHANGES. ONE OF THE PRINCIPAL PRODUCTS IS THE IDENTIFICATION OF ALL THE BASIC ELEMENTS THAT CONSTITUTE A PHASING PATTERN. EACH OF THE PHASING PATTERNS IS THEN DESCRIBED BY A SET OF PARAMETERS THAT HAVE ONE-TO-ONE CORRESPONDENCE WITH THE SIGNAL-CONTROLLER ADJUSTMENTS. THESE BASIC PHASING PARAMETERS ARE USED AS AIDS TO DEVELOP AND SYNTHESIZE THE VARIOUS POSSIBLE PHASING PATTERNS. AFTER EACH PHASING PATTERN DEVELOPED IS EVALUATED, 2 PREFERRED SETS OF PHASING PATTERNS ARE IDENTIFIED AND A TYPICAL DIAMOND INTERCHANGE PHASING PATTERN FROM THE FIELD IS DESCRIBED. APPLICABILITY OF THESE PHASING CONCEPTS TO THE REAL-TIME CONTROL OF DIAMOND INTERCHANGES IS ALSO DISCUSSED. FINALLY OPERATIONAL CHARACTERISTICS OF FULL DIAMOND INTERCHANGES FROM SIGNALIZATION DATA AVAILABLE FOR THE CITY OF LOS ANGELES ARE PRESENTED. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1971/349/349-005.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309019613
• Supplemental Notes:
  • Sponsored by Committee on Highway Capacity and Quality of Service and presented at the 50th 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:
  • Munjal, P K
• Conference:
  • 50th Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1971-1-18 to 1971-1-22
• Publication Date: 1971

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 47-64
• Monograph Title: Traffic Flow, Capacity and Quality of Service
• Serial:
  • Highway Research Record
  • Issue Number: 349
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Correlation analysis; Diamond interchanges; Evaluation; Interchange ramps; Location; Real time control; Signalization; Spacing; Traffic signal control systems
• Uncontrolled Terms: Characteristics; Parameters
• Old TRIS Terms: Ramp location & spacing
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226061
• Record Type: Publication
• ISBN: 0309019613
• Report/Paper Numbers: HS-011 999
• Files: TRIS, TRB
• Created Date: Oct 3 1971 12:00AM