Three attempts to trace the effects of chemical deicing methods (salting) on traffic accidents are reported. Only police reported accidents on national roads during the winter are taken into account without distinction as to severity. An analysis of variance conducted between 1970 and 1974 does not show that salting effects the total number of accidents. Another analysis based on the road conditions in the winter of 1973 shows that on ice/snow the accident rate is 3 to 20 times higher than on dry ground, but this rate increases under light ice/snow conditions due to a surprise factor. A before-after study conducted in 1972 through 1973 and 1974 through 1975 on salted and unsalted roads shows that the accident rate is not changed by salting. However, as this is a nonexperimental study no firm conclusions can be drawn.
Chemical de-Icing of Roads: The Effect on Road Accidents
1978
51 pages
Report
Keine Angabe
Englisch
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