EXTENDING THE USE OF ABOVE GROUND DETECTORS

In the UK, a significant proportion of traffic signals have vehicle actuated control strategies; that is the signals change priority mainly in response to vehicles approaching the stop line. Until very recently, all these traffic signals had, as a minimum, a set of inductive loop detectors on each approach. However, recently, this has begun to change and above ground detectors (AGDs) are increasingly being used instead. This is due to a number of factors such as: improvements in AGD technology, reductions in cost, cost of installation and maintenance, especially in areas where loops are frequently disturbed due to works carried out by the Statutory Undertakers. In some cases, it can be several months before any remedial action is taken and during this period, the traffic controller defaults to fixed time control. Currently, there is little published guidance on the use of AGDs. This research project aims to provide guidance to traffic engineers which will enable them to further extend the use of AGDs into areas currently dominated by loop detectors. This two-and-a-half-year project includes the following procedures: collation of existing published work; determination of user requirements; assessment of existing and near market AGDs; and comparison of life-cycle costs for all forms of vehicle detectors.

• Supplemental Notes:
  • Full conference proceedings available only on CD.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Cordell, R
  • Leighton, I
  • Phull, S
• Conference:
  • Intelligent Transportation: Realizing the Future. Abstracts of the Third World Congress on Intelligent Transport Systems
  • Location: Orlando, Florida
  • Date: 1996-10-14 to 1996-10-18
• Publication Date: 1996

Language

• English

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Actuated traffic signal controllers; Life cycle costing; Loop detectors; Markets; Motor vehicles; Needs assessment; Traffic actuated controllers; Traffic signals; Vehicle detectors
• Uncontrolled Terms: User requirements
• Old TRIS Terms: Above ground
• Subject Areas: Finance; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00741667
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 26 1997 12:00AM