A dual-mode transit is assumed in which in mode one a vehicle is driven on city streets by an operator and in mode two the vehicle enters a guideway system to travel under automatic control. The system offers point-to-point demand service, scheduled service, and a service called cycle route policy (CRP). The CRP dynamically recomputes routes and allots vehicles to routes in response to changes in link travel times and demand. Each passenger travels a minimum-time route from origin to destination. The vehicle paths are cycles. Every origin-destination (trip) pair generates a cycle consisting of the minimum-time route from origin to destination and return. In this process several pairs may generate the same cycle. The cycle routes are the distinct members in the set of cycles so formed. The number of vehicles circulating on each cycle is adequate both to service all passenger requests for trips that are generators of the cycle and to provide at least a minimum frequency of service. The three types of service are compared with respect to cost and the demand conditions for which each is appropriate. A vehicle management system that uses all three types of service simultaneously is recommended. The method applies to vehicle paths on or off guideway. /Author/

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    • 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:
    • Winfield, David H
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  • Publication Date: 1976

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  • Accession Number: 00149252
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Mar 15 1977 12:00AM