FREEWAY TRAVEL TIME EVALUATION TECHNIQUE

AN ANALYTIC PROCEDURE IS DESCRIBED THAT EVALUATES THE EFFECTIVENESS OF FREEWAY IMPROVEMENT PLANS SUCH AS DESIGN MODIFICATIONS AND RAMP CONTROL. THE PROCEDURE, WHICH SYSTEMATICALLY CALCULATES TRAVEL TIME ALONG THE FREEWAY UNDER GIVEN PHYSICAL AND TRAFFIC CONDITIONS, CONSISTS OF TWO SUBMODELS: FREEWAY CAPACITY ANALYSIS AND FREEWAY TRAVEL TIME CALCULATION. DEMANDS ARE CALCULATED FROM O/D TABLES OF 15-MINUTE INTERVALS, AND THE TRAVEL SPEED FOR EACH FREEWAY SUBSECTION IS ESTIMATED USING THE RELATIONSHIP BETWEEN VOLUME AND CAPACITY AND OPERATING SPEED. TRAVEL TIME IS CALCULATED FOR QUEUEING AND NONQUEUEING SITUATIONS. COMPUTER OPERATING PROCEDURES AND INPUT/OUTPUT FORMATS ARE DESCRIBED, AND THE RESULTS OF SAMPLE MODEL OUTPUTS ARE COMPARED WITH DATA COLLECTED FROM THE EAST SHORE FREEWAY. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1970/321/321-003.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Quality of Traffic Service and presented at the 49th 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:
  • Makigami, Yasuji
  • WOODIE, WILLIAM L
• Publication Date: 1970

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 33-45
• Monograph Title: Highway Capacity and Quality of Service
• Serial:
  • Highway Research Record
  • Issue Number: 321
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Demand; Freeways; Highway capacity; Highway design; Information processing; Interchange ramps; Mathematical models; Origin and destination; Peak hour traffic; Travel time
• Old TRIS Terms: Freeway design; Freeway ramps
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225886
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Dec 28 1970 12:00AM