TRANSIT SKETCH PLANNING PROCEDURES

The current urban transportation planning process is highly dependent on a complex set of travel demand models that operate at a relatively fine level of detail. These models ultimately produce travel assignments on alternative modes of travel. Unfortunately, these travel demand estimates are often insensitive to policy variables, and the process is often too cumbersome and time consuming to be used to test a wide range of transportation policy alternatives. This paper describes a complementary analytical method called the transit sketch planning process. It is purpose is not to supplant traditional, more detailed urban transportation planning but to extend the range of existing procedures. The transit sketch planning process uses a much more aggregated data base. A logit modal-choice model is adapted to operate at such a level of aggregation while producing transit-demand estimates that are consistent with detailed estimates. Policy alternatives can be evaluated with respect to their overall impact on central business district, city center, and suburban transit demand. With a complementary cost analysis, the degree of subsidy required for each policy alternative is estimated. Those policies that appear to be most promising can be further tested in the traditional urban transportation planning system to evaluate the detailed impacts at a zone-to-zone and facility level. The procedures do not attempt to advance the state of the art of transportation demand forecasting. Rather they attempt to use the best of existing procedures in a framework that can provide quick responses to transit policy questions that local planners must answer.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1976/569/569-001.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=TRANSIT+SKETCH+PLANNING+PROCEDURES&author=C.+Difiglio&author=M.+Reed&publication_year=1976
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/030902482X
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Passenger Travel Demand Forecasting. 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:
  • Difiglio, Carmen
  • Reed Jr, Marshall F
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1-11
• Monograph Title: New approaches to travel forecasting
• Serial:
  • Transportation Research Record
  • Issue Number: 569
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Analysis; Central business districts; Costs; Forecasting; Logits; Mode choice; Sketch planning; Subsidies; Suburbs; Transportation planning; Transportation policy; Travel demand; Urban transportation
• Uncontrolled Terms: Cost analysis
• Old TRIS Terms: Modal selection; Sketch planning techniques
• Subject Areas: Finance; Highways; Planning and Forecasting; Policy; Public Transportation;

Filing Info

• Accession Number: 00141288
• Record Type: Publication
• ISBN: 030902482X
• Files: TRIS, TRB
• Created Date: Oct 26 1981 12:00AM