METHOD OF ESTIMATING SURFACE CONDITION OF ROAD

摘要

PROBLEM TO BE SOLVED: To provide a method by which the surface condition of a road can be estimated automatically at a low cost and, in addition, can be discriminated locally. SOLUTION: The surface condition of the road is estimated by finding the quantity of heat Wa flowing in the surface of the road from the atmosphere side based on a measured meteorological quantity value and the quantity of heat We flowing in the surface of the road from the ground side based on a measured earth temperature value and comparing the quantities of heat Wa and We with each other.