FORMULATING RIDESHARING GOALS FOR TRANSPORTATION AND AIR QUALITY PLANS: SOUTHERN CALIFORNIA AS A CASE STUDY
This paper summarizes a two-phase technical study of new methodologies to formulate regional ridesharing goals. It was conducted in 1985 and 1986 by the Los Angeles based Commuter Transportation Services, Inc. (CTS, also known as Commuter Computer), for the Southern California Association of Government (SCAG). SCAG, the metropolitan planning organization for the Los Angeles metropolitan area, includes ridesharing goals in two of its regional plans, the Regional Transportation Plan (RTP) of 1984 and the Air Quality Management Plan (AQMP) of 1982. As required by state and federal laws, SCAG must review and update its RTP and AQMP periodically. The update schedule was developed to allow for a simultaneous review of the two plans. In reviewing the plans, one of SCAG's concerns was that these two functionally overlapping planning documents did not have a unified approach to an important transportation program, ridesharing. The methodology recommended by CTS for resolving this inconsistency used the two databases that best reflected the ridesharing activity taking place in the region. These were the Urban Transportation Planning Package (UTPP) and the California State Department of Transportation (Caltrans) high-occupancy vehicle (HOV) counts. The study also recommended average vehicle ridership (AVR) and number of ridesharers as unifying measurements for expressing and monitoring ridesharing goals. In this study, a region with severe congestion and air quality problems was used to demonstrate how regional transportation and air quality planning could be linked at the technical level through common ridesharing goals. As a result, the technical solutions proposed in this study are directly applicable to transportation and air quality planning in other metropolitan regions. The study's most problematic areas, not unique to this study, are inadequate information on the interaction of different demand reduction programs and on the dynamics of commuter behavior.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309045118
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Traveler Behavior and Values. 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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Authors:
- Bibas, Helene T
- Platkin, Richard
- Publication Date: 1987
Media Info
- Media Type: Print
- Features: References; Tables;
- Pagination: pp 20-27
- Monograph Title: Recent ridesharing research and policy findings
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Serial:
- Transportation Research Record
- Issue Number: 1130
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Air quality management; Behavior; Case studies; Commuters; Databases; Demand; High occupancy vehicles; Methodology; Metropolitan planning organizations; Regional transportation; Ridership; Ridesharing; Strategic planning; Traffic congestion; Transportation planning; Urban transportation
- Geographic Terms: California
- Subject Areas: Highways; Passenger Transportation; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 00469142
- Record Type: Publication
- ISBN: 0309045118
- Files: TRIS, TRB, ATRI
- Created Date: Jun 30 1988 12:00AM