PERFORMANCE ASSESSMENT OF ROAD SURFACE FREEZING POINT SENSORS

European manufacturers are developing freezing point sensor systems; some use the Peltier effect and are known as 'active' sensors and others using measures of capacity and conductivity are known as 'passive' sensors. TRL were commissioned by the Highways Agency, DOT in 1992 to assess whether the displayed freezing point temperatures from these systems were consistent and accurate when compared to observed road conditions allowing for the effetcive measurement of the residual deicing chemical on the road. Laboratory and field tests were carried out and data recorded from two systems installed in the UK, the Sermo Meteo'Max 'active' sensor system and the Vaisala DRS12 'passive' sensor system suggested that further work is necessary to verify the ability of the systems to measure freezing point temperatures and residual salt accurately. (A) For the covering abstract see IRRD 874749.

  • Corporate Authors:

    Hemming Group, Limited

    32 Vauxhall Bridge Road
    London,   United Kingdom  SW1V 2SS
  • Authors:
    • BURTWELL, M
  • Publication Date: 1995

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00715940
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jan 31 1996 12:00AM