TRAFFIC SIGNAL SYSTEMS: TECHNIQUES FOR OPTIMIZING OPERATION
THIS DISCUSSION CONCENTRATES ON THE COST EFFECTIVENESS OF OPTIMIZATION OF EXISTING SIGNAL SYSTEMS. FIVE OF THE TOOLS AVAILABLE TO DEVELOP IMPROVED SIGNAL TIMING FOR EITHER A NETWORK OR A LINEAR SYSTEM ARE DESCRIBED. THE WEBSTER OPTIMIZATION OF CYCLES AND SPLITS MINIMIZES TOTAL DELAY, BASED ON A FORMULA DERIVED FOR CYCLE LENGTH AND SPLITS. LITTLE'S MAXIMAL BANDWIDTH MODEL IS A TECHNIQUE THAT STRATEGICALLY DETERMINES SIGNAL OFFSETS ALONG AN ARTERY, GIVEN CYCLE LENGTH, SPLITS, CERTAIN TRAFFIC CHARACTERISTICS AND SIGNAL SPACING. A THIRD TECHNIQUE, DEVELOPED AT THE BRITISH ROAD RESEARCH LABORATORY, OPTIMIZES OFFSETS IN A FIXED-TIME SIGNAL TIMING PLAN FOR AN ARTERY OR A CLOSED NETWORK. SIGOP, A FOURTH APPROACH, DETERMINES AN OPTIMUM PLAN OF CYCLE LENGTH, PHASE SPLITS, AND OFFSETS FOR THE TRAFFIC SIGNALS IN THE NETWORK. A FIFTH METHOD FOR NETWORK SIGNAL TIMING IS CALLED TRANSYT AND HAS CHARACTERISTICS SIMILAR TO THOSE OF SIGOP. THE ARTICLE LISTS IMPROVEMENTS AND GIVES A HYPOTHETICAL OPERATION BASED ON WORK IN LOS ANGELES, RELATING PROGRAM TO COST-EFFECTIVENESS.
-
Supplemental Notes:
- pp 51-53, 3 TAB
-
Corporate Authors:
Itte, University of California, Berkeley
23rd California Transportation & Public Works Conference
, United States -
Authors:
- Capelle, D G
- Publication Date: 1971-3
Subject/Index Terms
- TRT Terms: Benefit cost analysis; Computer programs; Traffic control; Traffic flow theory; Traffic signal control systems; Traffic signal timing
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00226264
- Record Type: Publication
- Files: TRIS
- Created Date: May 1 1972 12:00AM