Abstract
The snow caused by the snowfall ground of winter and the influence of freezing greatly influence an industrial, economic activity and the life.
A total rate of accident of the snowfall ground in winter tends to rise to about 3〜4 times compared with the rate of accidents other than winter. The change in the road surface condition influences the safety of the road traffic. Then, the method for distinguishing the road surface condition in winter from the image of the infrared camera and black and white CCD camera that can be widely detected by noncontact is devised in the present study.
