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原文传递 An assessment of the effect of de-icers on skidding accidents

题名：	An assessment of the effect of de-icers on skidding accidents
责任者：	L Crinson, J Martin
关键词：	not available
学科分类：	交通运输安全
摘要：	During periods of frost and snow, the formation of a layer of ice on a road surface will lead to a large reduction in friction, and increase significantly the risk of skidding accidents. For this reason, highway authorities have a duty to keep highways free of ice and snow and endeavour to meet this duty through winter service operations. However, concerns have been expressed by some road users that de-icing operations, particularly repeated operations when de-icers can build up on the road surface, can adversely affect skid resistance. The Highways Agency commissioned TRL to investigate the effect of de-icing operations on skidding accidents and skid resistance. This report describes a desktop study to address the first objective of the research project: to identify where and when a reduction in skid resistance due to repeated de-icing operations has been experienced on the Agency’s network and any common factors. The data were analysed in three stages: 1. an overview of winter accidents in comparison with other times of year using the national accident data; 2. comparison of the accident densities and characteristics of winter accidents on an Area basis with and without the use of de-icers using the Highways Agency’s database that reports winter service operations in combination with the accident data; 3. comparison of the accident rate on routes on days with and without the use of de-icers. This analysis used traffic data in addition to the data used in the second stage.
出版机构：	Transport Research Laboratory
提交日期：	24 October 2008
总页数：	74
报告类型：	科技报告
资源类型：	科技（咨询、行业）报告
初始创建时间：	24 October 2008