A METHODOLOGY AND COMPUTER-AIDED SYSTEM FOR SIGNAL GROUPING OF COMPUTERIZED TRAFFIC SIGNAL DESIGN

Computerized traffic signal design is composed of several steps: road network survey, traffic survey, control area determination, signal grouping, signal phasing design, signal timing generation, and signal performance evaluation. In the past years, most of the research efforts were focused on the topic of signal timing design. Little attention has been paid to those steps prior to the step of signal timing design, although they also have great effects on the optimization of computerized traffic signal design. The objective of this research is to develop a methodology for signal grouping. Factors affecting signal grouping are sorted out and examined. Relationships between the affecting factors and signal grouping are investigated. The qualitative guideline or quantitative threshold of each affecting factor is established. TRAF-NETSIM and TRANSYT-7F are used in a case study of urban street network to show the performance of a traffic control system with different ways of signal grouping. The effectiveness of the proposed methodology is evaluated and a computer-aided system has also been designed for the practical application of traffic engineers. (A) For the covering abstract see IRRD 882109.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 239-46

Subject/Index Terms

Filing Info

  • Accession Number: 00726501
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-947719-74-1
  • Files: ITRD
  • Created Date: Oct 28 1996 12:00AM