This paper attempts to outline the case for dual-mode transportation systems as the candidate urban transportation system most responsive by far to the entire range of current and foreseeable issues and values governing transportation investments in urban areas. The paper first outlines these issues and describes the resulting criteria that alternately propel and impede the implementation of alternative urban transportation improvements. Analysis reveals that dual-mode transportation systems respond logically and affirmatively to all criteria. Fractional-second headway automated electrically powered guideway systems capable of accommodating a variety of vehicle sizes, and vehicles capable of manual operation off the guideway are indicated. The vehicles would serve both public and private transportation needs through a much larger variety of ownership, pricing, and service schemes than available today. Relative to conventional internal combustion engines, electric power would allow flexibility in the use of basic energy sources, control of air pollution from power generation at relatively few sources, and precise longitudinal control of vehicle location and spacing on the guideway. Condlusions are drawn on the appropriate role and resulting performance requirements for dual-mode transportation systems.

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  • Supplemental Notes:
    • This paper appears in Dual Mode Transportation, which is a publication containing the proceedings of a conference conducted by the Transportation Research Board, May 29-31, 1974. 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
  • Corporate Authors:

    Transportation Research Board (TRB)

    Washington, DC   
  • Authors:
    • Brand, Daniel
  • Conference:
  • Publication Date: 1976

Media Info

  • Media Type: Print
  • Features: References;
  • Pagination: pp 23-27
  • Monograph Title: Dual-mode transportation
  • Serial:

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Filing Info

  • Accession Number: 00149228
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Mar 15 1977 12:00AM