DERIVATION OF FREEWAY SPEED PROFILES FROM POINT SURVEILLANCE DATA. ABRIDGMENT

This paper discusses an approach to the derivation of vehicle speed profiles from point surveillance data; however, the limitations of the available data precluded a comprehensive evaluation of the procedure. All indications are that this process can be successfully used for freeway applications; therefore, it is recommended that further validation of the process be pursued. This validation is necessary because of the possible errors introduced by variations in vehicle lengths, difficulties in estimating speed propagation rates, and lane-changing maneuvers between the detectors. Currently, variations in vehicle length are compensated for by smoothing the input data to reduce the impact on speed processing, but this also introduces errors in the computation process.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1978/682/682-011.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=DERIVATION+OF+FREEWAY+SPEED+PROFILES+FROM+POINT+SURVEILLANCE+DATA.+ABRIDGMENT&author=P.+Tarnoff&author=W.+Kittelson&publication_year=1978
• Availability:
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• Supplemental Notes:
  • Publication of this paper 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:
  • Tarnoff, Philip J
  • Kittelson, Wayne K
• Conference:
  • 57th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1978-1-16 to 1978-1-20
• Publication Date: 1978

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 66-68
• Monograph Title: Urban system operation and freeways
• Serial:
  • Transportation Research Record
  • Issue Number: 682
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Freeways; Lane changing; Length; Motor vehicles; Speed; Surveillance; Traffic flow; Traffic speed; Validation; Variables
• Old TRIS Terms: Variations
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00196602
• Record Type: Publication
• ISBN: 0309028272
• Files: TRIS, TRB
• Created Date: Sep 15 1979 12:00AM