SLIPPING AND SLIDING? THE EFFECTS OF REDUCED DE-ICING IN FINLAND

A two-year experiment concerning reduced salting on main roads has been going on in the road district of Kuopio, Finland since the autumn of 1992. The total length of roads where salt use was reduced is about 360 km. In the first winter the amount of salt used on these roads was reduced by about 90 percent. On the experimental roads, friction levels below 0.3 were twice as common (for 32 percent of vehicle kilometers) as on control roads in the neighboring road district (16 percent). Less than 3 percent of traffic, however, had to cope with friction levels below 0.2. The total number of police-reported accidents in the first winter was 15 percent lower but the number of casualties 25 percent higher than in the previous winter. The effects on accidents can be analyzed in detail only later in 1994 when accident data for the entire winter from similar roads elsewhere in Finland becomes available. According to the mail survey, 74 percent of the population were pleased with the experiment.

Language

  • English

Media Info

  • Features: Figures;
  • Pagination: p. 497-503

Subject/Index Terms

Filing Info

  • Accession Number: 00664447
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 4 1994 12:00AM