THERMAL MAPPING APPLICATION FOR SNOW AND ICE CONTROL ON EXPRESSWAYS

This paper describes how approximately 80% of the expressways managed by the Tohoku Branch Office of the Japan Highway Public Corporation are in cold snowy areas that accumulate over 30 cm of snowfall annually. Thus, the efforts to keep traffic moving during this snow and ice control period are an objective of this paper. The most important measure for snow and ice control in the region is the anti-freezing admixture that is dusted over the road surface temperatures before they freeze. It is essential to collect information such as road surface temperature in order time the dusting procedure. The information collection work is commonly carried out by patrolling the expressways. But, it is impossible to obtain information on all routes in real-time. It is necessary to accurately acquire the changing information such road surface temperatures from point to point. This paper describes how, in the thermal mapping application, atmospheric temperatures and road surface temperature were measured and continuously collected by using a measuring vehicle, The measured data underwent a statistic analysis by obtaining the transverse thermal distribution, extracting the particular low-temperature sections, calculating the correlation between measured temperature at local meteorological observations and the temperatures measured at points at intervals of 500m. Then, the effective coverage of each meteorological observatory and the positions of new additional observation deployments are discussed. The low-temperature hazardous sections were arranged in a freezing hazard map. The effective coverage of each meteorological observatory can be monitored in real-time.

• Supplemental Notes:
  • Conference Proceedings available on CD-ROM.
• Corporate Authors:

  World Road Association (PIARC)

  La Grande Arche, Paroi Nord, Niveau 5
  F-92055 La Defense Cedex,   France 
• Authors:
  • Sugano, H
  • Kyougoku, Y
  • Kikuchi, K
• Conference:
  • New Challenges for Winter Road Service. XIth International Winter Road Congress
  • Location: Sapporo, Japan
  • Date: 2002-1-28 to 2002-1-31
• Publication Date: 2002

Language

• English

Media Info

• Pagination: 9p

Subject/Index Terms

• TRT Terms: Deicing; Expressways; Mapping; Snow and ice control; Snowfall; Surface temperature; Thermal analysis; Winter maintenance
• Geographic Terms: Japan
• Subject Areas: Highways; Maintenance and Preservation; I62: Winter Maintenance;

Filing Info

• Accession Number: 00925099
• Record Type: Publication
• Files: TRIS
• Created Date: May 3 2002 12:00AM