TRANSFER OPTIMIZATION IN AN INTERACTIVE GRAPHIC SYSTEM FOR TRANSIT PLANNING

This paper describes a coordinated four-stage interactive graphic process for operational transit planning. Stage 1 deals with route, headway, and vehicle-type optimization; stage 2 attempts to optimize transfer delays; stage 3 designs runs so that the service resulting from the previous stages can be operationalized; and stage 4 provides computer assistance in making manpower assignments. The network optimization procedure of stage 1 has been previously reported on, and the latter two stages are currently under development. This paper deals principally with the transfer optimization tool of stage 2. The operational tool to optimize transfer delays involves the automated-iterative modification of terminal departure times. An interactive graphic computer approach is used to increase the transparency of the tool to the planner. The analysis takes into account the calculation of expected waiting times for transfers between transit lines with different headways and the interdependence of terminal departure times. Within the interactive graphic optimization process, the user can request computer-generated and computer-drawn charts of transfer movements and delays, time-distance diagrams of individual routes, and computer-produced transfer statistics at individual stops as well as the entire system. The process has been applied to the Basel Transit System in Switzerland, which serves a population of 500,000. In comparison with the existing hand-generated timetable, the optimized timetable reduces the total transfer delays by approximately 20 percent with no increase in operating costs. /Author/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/619/619-008.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=TRANSFER+OPTIMIZATION+IN+AN+INTERACTIVE+GRAPHIC+SYSTEM+FOR+TRANSIT+PLANNING&author=M.+Rapp&author=C.+Gehner&publication_year=1967
• Availability:
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• Supplemental Notes:
  • Publication of this paper sponsored by Task Force on Computer Graphics and Interactive Graphics. 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
• Authors:
  • Rapp, Matthias H
  • Gehner, Claus D
• Publication Date: 1967

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 27-33
• Monograph Title: Innovations in Transportation System Planning
• Serial:
  • Transportation Research Record
  • Issue Number: 619
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Computer graphics; Headways; Information processing; Optimization; Rapid transit; Routes; Statistics; Traffic delays; Transfers; Transportation planning; Urban transportation; Waiting time
• Uncontrolled Terms: Interactive graphics
• Old TRIS Terms: Rapid transit planning
• Subject Areas: Data and Information Technology; Finance; Highways; Operations and Traffic Management; Planning and Forecasting; Public Transportation; Railroads;

Filing Info

• Accession Number: 00163929
• Record Type: Publication
• ISBN: 0309025982
• Report/Paper Numbers: Intrm Rpt.
• Files: TRIS, TRB
• Created Date: Oct 13 1982 12:00AM