COMPARISON BETWEEN A DYNAMIC SIGNAL PLAN GENERATION SYSTEM OF AREA TRAFFIC CONTROL AND A FIXED-TIME SYSTEM

TO COMPARE TWO METHODS OF CO-ORDINATING TRAFFIC SIGNALS IN AN AREA. THE SIGNALS IN MADRID ARE CONTROLLED ACCORDING TO A DYNAMIC SIGNAL PLAN GENERATION SYSTEM WHICH WAS THE FIRST OF ITS TYPE IN THE WORLD. THE DYNAMIC SIGNAL PLAN GENERATION SYSTEM USES INFORMATION FOR DETECTORS TO CALCULATE ON LINE THE CYCLE TIME, SPLITS AND OFFSETS TO BE USED AT EACH SIGNAL. THIS WAS COMPARED WITH A SYSTEM SIMILAR TO THE MOST SUCCESSFUL FIXED-TIME SCHEME THAT HAD BEEN TRIED IN GLASGOW. IT WAS FOUND THAT THE DYNAMIC SYSTEM AS TESTED IN MADRID IN AUTUMN 1970 GAVE LONGER JOUR- NEY TIMES BY ABOUT 9 PER CENT DURING THE WORKING DAY; THE DIFFERENCES WERE STATISTICALLY SIGNIFICANT AT THE 5 PER CENT LEVEL. NO OBSERVATIONS WERE MADE AT WEEKENDS OR DURING THE NIGHT WHEN THE DYNAMIC SYSTEM MIGHT BE EXPECTED TO HAVE AN ADVANTAGE OVER A FIXED-TIME ONE. A NUMBER OF IMPROVEMENTS HAVE SINCE BEEN MADE TO THE DYNAMIC SYSTEM IN USE IN MADRID. /TRRL/

• Corporate Authors:

  Department of The Environment /UK

  /Transport & Road
  ,   United States 
• Authors:
  • Holroyd, J
• Publication Date: 1972

Language

• English

Media Info

• Features: Figures; References;
• Pagination: 16 p.
• Serial:
  • Issue Number: lr48

Subject/Index Terms

• TRT Terms: Pretimed traffic signal controllers; Signalization; Traffic control; Travel time; Urban areas
• Old TRIS Terms: Traffic control systems
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226959
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: R & D Rpt
• Files: TRIS
• Created Date: Oct 9 1973 12:00AM