REAL-TIME TRAFFIC SIGNAL COORDINATION WITH TRANSIT PRIORITY : RECENT ADVANCES IN THE SPPORT MODEL

Real-time traffic signal optimization software was developed using object-oriented techniques based upon the SPPORT (Signal Priority Procedure for Optimization in Real Time) model. SPPORT is a rule-based model that provides specialized mechanisms for transit priority. Based upon a flexible discrete-event traffic simulator that realistically models the effects of transit operations on the general flow of traffic, and equipped with rules designed to provide effective transit priority while still giving appropriate consideration to other traffic, SPPORT generates signal timings to minimize an objective function in which transit vehicles may be weighted as deemed appropriate in relation to other traffic. In developing this software the SPPORT model was extended to support user-defined intersection configurations, multiphase traffic signal operation, and a more advanced form of transit priority that considers both nearside and midblock transit stop locations. This paper focuses on the fundamental concepts of the SPPORT model and their relationships to the key components of the SPPORT software. An illustrative example is also presented

• Supplemental Notes:
  • Publication Date: 1998. Transportation Research Board, Washington DC. Remarks: Paper no. 980660 prepared for presentation at the 77th annual meeting of the Transportation Research Board, Washington, D.C. Jan. 1998
• Authors:
  • Conrad, Mark
  • Dion, Francois
  • Yagar, Sam
• Publication Date: 1998

Language

• English

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Real time control; Simulation; Traffic signal preemption
• Subject Areas: Operations and Traffic Management;

Filing Info

• Accession Number: 00814722
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: PATH
• Created Date: Aug 20 2001 12:00AM