OPTIMAL CONTROL OF ISOLATED TRAFFIC SIGNALS

A control strategy named TOL (Traffic Optimization Logic) based upon the criterion of minimization of traffic operating costs and disturbance of the environment at a given traffic demand was developed. The method calculates at regular intervals, if the prevailing phase should be extended or not, based on short-term predictions of the resulting benefit and disbenefit to the different categories of traffic in the intersection. TOL was tested and compared with conventional fixed-time and vehicle-actuated (VA) control with or without bus priority by means of simulation and field experiments. Another control strategy for isolated intersections is also presented, a phase generating strategy which on-line creates new phases depending on the traffic demand in the intersection.

• Supplemental Notes:
  • Proceedings of the International Federation of Automatic Control/International Foundation for Information Process/International Federation of Oper Research Society International Symposium: Control in Transportation Systems, Columbus, Ohio, August 9-13, 1976.
• Corporate Authors:

  International Federation of Automatic Control

  EKONO, P.O.B. 27
  Helsinki 13,   Finland 
• Authors:
  • Bang, K L
  • Nilsson, L E
• Conference:
  • Proceedings of the International Federation of Automatic Control/International Foundation for Information Process/International Federation of Oper Research Society International Symposium: Control in Transportation Systems, Columbus, Ohio, August 9-13, 19
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: p. 173-184

Subject/Index Terms

• TRT Terms: Actuated traffic signal controllers; Bus priority; Computers; Control systems; Environmental impacts; Highway traffic control; Information processing; Intersections; Operating costs; Optimization; Pretimed traffic signal controllers; Simulation; Traffic actuated controllers; Traffic control; Traffic control devices; Traffic signals
• Old TRIS Terms: On line computers; Traffic control systems
• Subject Areas: Environment; Highways; Operations and Traffic Management; Public Transportation;

Filing Info

• Accession Number: 00156353
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS, ATRI
• Created Date: Oct 13 1977 12:00AM