STUDY ON THE EVALUATION OF SNOW AND ICE CONTROL OF ROADS BY USING WINTER INDEX

Hulme and Thorns have expressed a severity of the winter season associated with a snow and ice control in terms of Winter Index (WI). SHRP (Strategic Highway Research Prog.) proposed “SHRP WI”, which offered the rational calculation method and management of the snow and ice control. WI calculated over several winter seasons are considered as the effectiveevaluation criteria in case of evaluating the snow and ice control cost, appropriate allocation of resources and efficiency of maintenance works. In this paper, the snow and ice control practices in Sapporoare mentioned as a case study based on the concept of SHRP WI. As the results of analysis on the correlations between WI and winter maintenance cost /works, WI is found to be a prospective tool to evaluate the winter maintenance practices.