A brief note describing the operation of a fully automatic incident detection system initially installed at two locations on the M1 motorway. The new system called grid uses inductive loop-type vehicle detectors buried in each traffic lane at intervals of about 500 m. Microprocessors continually examine the output from the detectors and a specially developed algorithm is used to detect disturbances to traffic flow that invariably follow an incident. As well as being a permanent installation the system can also be deployed at major road works using temporary loops. The system was developed by the Transport and Road Research Laboratory (TRRL) and uses a distributed processing system based on microprocessors designed and constructed by Golden River, Traffic Flow Monitoring Equipment Manufacturers. (TRRL)

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  • Corporate Authors:

    Specialist and Professional Press

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Publication Date: 1984-10

Media Info

  • Features: Figures;
  • Pagination: p. 8-9
  • Serial:
    • Volume: 163
    • Issue Number: 4816
    • Publisher: Hemming Group, Limited
    • ISSN: 0039-6303

Subject/Index Terms

Filing Info

  • Accession Number: 00393270
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jun 30 1985 12:00AM