When the Ottawa Transportation Commission converted (1958) from streetcars, trolley coaches and buses to an all-bus operation, specifications were prepared and tenders were requested for 107 buses. The tenders received were evaluated on the basis of initial cost, availability (downtime), reliability (road calls), and operating and maintenance cost. Bus appearance, comfort, driver and passenger appeal, service and delivery were considered as important intangibles. Data, conditions and circumstances that had to be satisfied by acceptable tenders are listed and 3 fictitious tenders are used as illustrative examples. All tenders must be analyzed to consider what has been included or excluded in the buses offered, and the initial cost adjusted accordingly. The calculation of availability and road calls is described. The calculation of availability and road calls is described. In the calculation of maintenance costs, the standard procedure was to plot the maintenance cost of buses in cents per mile against the number of years in operation. The plot falls on a straight line which increases at the rate of 1.2 cents/mile/year. This represents the maintenance cost standard for own property and the bus that has been standardized on. Project cost curves are illustrated and the establishment of relative costs is explained.

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  • Supplemental Notes:
    • Presented at the Fifth Annual International Conference on Demand-Responsive Transportation Systems conducted by the TRB, Nov. 11-13, 1974, Oakland, Calif.; and co-sponsored by American Public Transit Association, California DOT, Alameda-Contra Costa Transit, MIT, UMTA and Technology Sharing Program of U.S. DOT. 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

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Authors:
    • Chaput, Hector
  • Conference:
  • Publication Date: 1975

Media Info

  • Media Type: Digital/other
  • Features: Figures; Tables;
  • Pagination: pp 69-75
  • Serial:

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Filing Info

  • Accession Number: 00126169
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 3 1982 12:00AM