DESIGN OF A PROGRESSIVELY TIMED SIGNAL SYSTEM

The objective of progressively timed signal system design is to produce bandwidths for both directions as large as possible in order to reduce stops and delay. A bandwidth is a portion of a signal cycle during which a car can start at one end of a street and travel at a desired speed to the other end without stopping for a red light. The computer program Network Optimization-Signal Timing Operations Program -- 1 (NO STOP-1), described here, first calculates a bandaxis given the desired progression speed, distance, split at each intersection, all-red clearance time and a firest trial cycle length. As the cycle length and speed are varied the best location of the bandaxis yielding the maximum constant bandwidths is found for the given conditions, and the computer prints out a table listing all data necessary to plot a time-space diagram. NO STOP-1 was found to compare favorably with SIGROP which varies only the cycle length, not the vehicle speed. /HRIS/

• Corporate Authors:

  Institute of Traffic Engineers

  2029 K Street, NW
  Washington, DC    20006
• Authors:
  • Leuthardt, H R
• Publication Date: 1975-2

Media Info

• Pagination: p. 11-18
• Serial:
  • Traffic Engineering
  • Volume: 45
  • Issue Number: 2
  • Publisher: Institute of Traffic Engineers

Subject/Index Terms

• TRT Terms: Bandwidth; Computer programs; Distance; Networks; Optimization; Speed and delay studies; Traffic delays; Traffic signal cycle; Traffic signal timing
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00084134
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 22 1975 12:00AM