Abstract:
Based on the data of national meteorological station, traffic meteorological station, road icing risk survey, traffic control, traffic accident, traffic flowing and geography information from October to April of the following year during 2011-2015 in Hebei Province, the evaluation index system of road icing risk zoning was constructed from three aspects including hazard factors, hazard-pregnant environment vulnerability and bearing body sensitivity, then the road icing risk zoning of expressway in Hebei Province correct to toll station was completed by using analytic hierarchy process and GIS technology. The results show:The expressways in northern Hebei and western mountainous area of Handan are high risk of road icing. The expressways in eastern Zhangjiakou, southern Chengde, western mountainous area of Baoding, western mountainous area of Shijiazhuang and southeastern Hebei are sub-high risk of road icing. The expressways of Qianxi Branch of Beijing to Qinhuangdao, Beijing to Kunming, Tianjin to Shantou, Huanghua to Shijiazhuang and Xingtai to Hengshui are low risk of road icing.