OPERATIONAL AND SAFETY EXPERIENCE WITH FREEWAY HOV FACILITIES IN CALIFORNIA

Highlights of a technical investigation conducted to evaluate various designs of HOV lanes currently in use on freeways in California are presented. Operational efficiency and safety were the measures of effectiveness examined. None of the currently operating facilities was found to contain severe operational or accident problems. All three of the broad design types identified in the state and studied were found to be operating relatively smoothly. Although statistically reliable conclusions could not be made, it did appear that certain designs were better than others. The physically separated facility appears to be the safest type because interaction of HOV lane vehicles and mixed flow vehicles is virtually eliminated. Of the facilitis that were physically separated (which were the primary focus of the study), the wide buffer (full lane width) facility was clearly superior to the contiguous types. The study was unable to differentiate between the various continuous designs, which were categorized by whether they restrict intermediate access or not.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1988/1173/1173-003.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=OPERATIONAL+AND+SAFETY+EXPERIENCE+WITH+FREEWAY+HOV+FACILITIES+IN+CALIFORNIA&author=L.+Newman&author=C.+Nuworsoo&author=A.+May&publication_year=1988
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1173, Urban 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:
  • Newman, Leonard
  • Nuworsoo, Cornelius
  • May, Adolf D
• Publication Date: 1988

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 18-24
• Monograph Title: Urban freeway operations
• Serial:
  • Transportation Research Record
  • Issue Number: 1173
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Design; Economic efficiency; Freeways; High occupancy vehicle lanes; High occupancy vehicles; Operations; Safety; Traffic lanes
• Uncontrolled Terms: Efficiency; Operational analysis
• Old TRIS Terms: Reserved lanes
• Subject Areas: Administration and Management; Design; Economics; Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control;

Filing Info

• Accession Number: 00483643
• Record Type: Publication
• ISBN: 0309047110
• Files: TRIS, TRB, ATRI
• Created Date: May 31 1989 12:00AM