00178754

Component

http://onlinepubs.trb.org...s/trr/1978/663/663-003.pdf

https://scholar.google.co...witz&publication_year=1978

Results from three recent non-separated concurrent-flow high occupancy freeway lane projects, Boston's Southeast Expressway, the Santa Monica Freeway in Los Angeles, and Miami's I-95, are compared. The Los Angeles and Miami projects have been terminated, and, in Miami, the carpool definition has been decreased to two or more persons per car. While carpooling and bus ridership increased, other results point out the many generic weaknesses in the concept: the large number of violators and the difficulty of enforcement; the potential for accidents; the inability of the reserved lanes by themselves to attract large numbers of new bus riders and carpooles; and the political problems associated with removing an already existing lane from general use. A comparison of the performance of these non-separated reserved lane projects with the Shirely Highway reversible lanes and the El Monte busway indicates that when concurrent flow lanes are separated from the general lanes by a concrete barrier or an empty safety lane, the accident and enforcement problems are virtually eliminated and the reserved lanes are better able to perform their function of attracting and carrying high occupancy vehicles. /Author/

This article appeared in Transportation Research Record No. 663, Recent Developments in Bus Transportation. The full text of this paper, UMTA report UMTA-MA-06-0049-78-2, is available from NTIS. 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

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pp 17-25

1978

Transportation Research Record

030902692X

Print

Figures (11) ; References (11) ; Tables (2)

Bus priority; Carpools; Crash exposure; Freeways; High occupancy vehicle lanes; Law enforcement; Politics; Ridership; Traffic lanes; Traffic violators

Santa Monica Freeway

Boston (Massachusetts); Los Angeles (California); Miami (Florida)

Boston (Massachusetts); Los Angeles (California); Miami (Florida)

Highways; Operations and Traffic Management; Public Transportation; Safety and Human Factors; Security and Emergencies

TRIS, TRB

Aug 19 1978 12:00AM

• A MODEL FOR INVESTIGATING THE EFFECTS OF SERVICE FREQUENCY AND RELIABILITY ON BUS PASSENGER WAITING TIMES
• A SIMULATION STUDY OF ALTERNATIVE REAL-TIME BUS HEADWAY CONTROL STRATEGIES
• AN INTERACTIVE BUS TRANSIT MANAGEMENT INFORMATION SYSTEM USING CREDIT CARD FARE COLLECTION DATA (ABRIDGMENT)
• BUS PRIORITY SIGNAL CONTROL: SIMULATION ANALYSIS OF TWO STRATEGIES (ABRIDGMENT)
• BUS TERMINAL PERFORMANCE MEASURED WITH TIME STAMPING
• COST ANALYSIS OF CURRENT U.S. SURFACE TRANSIT FARE COLLECTION SYSTEMS (ABRIDGMENT)
• INCENTIVE PROGRAM FOR BUS CARRIERS
• OPTIMAL URBAN BUS SIZE
• PEAK-BASE COST ALLOCATION MODELS
• SOUTHEAST EXPRESSWAY RESERVED LANE FOR BUSES AND CARPOOLS
• THE SANTA MONICA FREEWAY DIAMOND LANES: EVALUATION OVERVIEW
• THE SANTA MONICA FREEWAY DIAMOND LANES: FREEWAY ACCIDENT ANALYSIS