The report is the result of continuing efforts to understand the safe-headway trade-offs for Personal Rapid Transit (PRT) and dual-mode systems. It adds a new dimension to the traditional interactions among control complexity, safety, and acceleration. Analyses and computer programs are developed to determine how short it is possible to make the ramps leading into and out of off-line PRT stations. Simplified reference solutions are obtained and results are presented for state-of-the-art, improved, and advanced system parameters. Potential savings in the costs of stations are very large, due to the high construction cost of station ramps. Both point-follower and vehicle-follower control systems are considered. For point-follower control systems, the acceleration ramp can usually be eliminated. For vehicle-follower control systems, small deviations in the speed of through cars allows both acceleration ramps and deceleration ramps to be appreciably shortened.

  • Supplemental Notes:
    • Prepared in cooperation with Alden Self-Transit Systems Corp., Natick, Mass.
  • Corporate Authors:

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142

    Alden Self-transit Systems Corporation


    Urban Mass Transportation Administration

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Wright, R D
    • Whitten, R P
  • Publication Date: 1977-7

Media Info

  • Pagination: 125 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00167298
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT-TSC-UMTA-77-3 Final Rpt., UMTA-MA-06-0048-77-2
  • Files: NTIS, TRIS, USDOT
  • Created Date: Nov 23 1981 12:00AM