OPTIMAL SIGNAL TIMING FOR ARTERIAL SIGNAL SYSTEMS VOLUME 1: SUMMARY REPORT

The mixed-integer linear program introduced by Little for setting traffic signals to achieve maximal bandwidth is extended in several ways and developed into a portable, off-line, FORTRAN IV computer program called MAXBAND. Inputs to the program are distances between signals, upper and lower limits on cycle time, design speeds and tolerances, speed change limits, green times, left turn green times as applicable, queue clearance times, a target ratio of inbound to outbound bandwidth, and weights for the bandwidths. If flows and capacities are given instead of green spilts, splits are calculated using Webster's theory. The program produces cycle time, offsets, speeds, and order of left turn phases to maximize a weighted combination of bandwidths. The program uses Land and Powell's MPCODE branch and bound algorithm for optimization. Besides arteries the program can handle a three artery trianglular loop with arbitrary weighting of each arterial bandwidth in the overall objective function. Up to 17 signals can be handled in the loop; 20 in a pure arterial problem.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Sloan School of Management, Operations Research Center
    Cambridge, MA  United States  02139

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Little, JDC
    • Kelson, M D
  • Publication Date: 1980-12

Media Info

  • Pagination: 82 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00331199
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-RD-80-082 Final Rpt., FCP 32M2-112
  • Contract Numbers: DOT-FH-11-9562
  • Files: TRIS, USDOT
  • Created Date: Aug 15 1981 12:00AM