Abstract
Diffusion of studlesstires have almost completed in cold region in the winter of 1992. In proportion as studlesstires are come into wide use, road surface become slippery. And characteristics of winter traffic accidents are changing, as shown in the increase of slip accidents. For prevention of winter traffic accidents, of course, thoroughgoing countermeasures to road surface management are firstly neened. Furthermore it is necessary to improve road alignment to meet the changes of those characteristics. Also revising drivers' safety consciousness is needed to make up for countermeasures to road surfacemanagement in the circumstance when those countermeasures are still insufficient. This paper discusses countermeasures to road surface managements and road alignment and problems of drivers' sefety conciousness from analyses of characteristics of winter traffic accidents.
