LEICESTER COMPUTER SPREADS ITS NET

Operation of Leicestershire's area traffic control system is described. Individual sets of signals are coordinated to produce minimum delays by optimising signal timings. A continuous signal monitoring system enables faults to be repaired with the minimum of delay. The system employs 84 sets of traffic signals and 28 pelican crossings using 43 detector sites monitoring traffic flow and congestion. The system is based on Transyt 4. The operator has 12 closed-circuit televisions monitoring most of the central area and may change signal timings at a particular junction. Examples are given of cycle times and the use of the TV system. The traffic detectors provide continuous long-term traffic data which are stored in the computer. The operator can then observe flow trends, and a weekly printout is produced tabulating the hourly flows of the previous week at each site. Future plans based on Transyt 5 are explained. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03077683
• Corporate Authors:

  Institution of Civil Engineers

  One Great George Street, Westminster
  London,   United Kingdom  SW1P 3AA
• Authors:
  • GILLAM, J
• Publication Date: 1976-10-7

Language

• English

Media Info

• Features: Figures; Photos;
• Pagination: p. 54-55
• Serial:
  • NEW CIVIL ENGINEER
  • Issue Number: 213
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0307-7683

Subject/Index Terms

• TRT Terms: Area traffic signal control; Crosswalks; Digital computers; Information processing; Intersections; Sensors; Surveillance; Television; Television cameras; Traffic congestion; Traffic control; Traffic delays; Traffic flow; Traffic signal cycle; Traffic signal timing; Traffic signals; Traffic surveillance; Travel patterns
• Uncontrolled Terms: Traffic patterns
• Geographic Terms: United Kingdom
• Old TRIS Terms: Traffic control systems
• ITRD Terms: 669: Area traffic control; 632: Congestion (traffic); 576: Cycle (traffic signals); 9010: Delay; 8673: Digital computer; 455: Junction; 1659: Pedestrian crossing; 6120: Sensor; 9101: Surveillance; 6949: Television; 671: Traffic flow; 565: Traffic signal; 8119: United Kingdom
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00145380
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Apr 13 1977 12:00AM