Methods of traffic assignment, traffic signal setting, and modal split analysis are combined in a set of computer-assisted traffic engineering programs. The system optimization and user optimization traffic assignments are described. Travel time functions are presented for freeways, freeway entrance ramps, and signalized streets. Both single-vehicle and multiple-vehicle class (cars, car pools, and buses) formulations are described. Energy optimization is treated, and gasoline consumption functions for cars and buses are shown. Modal split analysis is described and integrated with the assignments so that the effect of favoring buses and car pools with 'diamond lanes' can be measured. The procedures are described and numerical examples are presented. It is concluded that this approach to traffic engineering is practical and computer programs can be written to analyze major parts of the traffic networks of U.S. cities.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Civil Engineering, 77 Massachusetts Avenue
    Cambridge, MA  United States  02139

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142
  • Authors:
    • Gershwin, S B
    • Little, JDC
    • Gartner, N
  • Publication Date: 1978-5

Media Info

  • Pagination: 101 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00181333
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT-TSC-RSPA-78-10 Final Rpt.
  • Contract Numbers: DOT-TSC-849
  • Files: NTIS, TRIS
  • Created Date: Sep 27 1981 12:00AM