Snow removal and ice prevention is one of the key tasks for winter road maintenance,in order to maximise road network mobility and minimise adverse impacts of wintery weather on road transportation.Roadside weather Information Systems (RWIS) and mobile Thermal Mapping (TM) technique monitor and collect historical and current weather and road conditions,and provide us with abundant and useful data.Based on such data,a decision support system (RoadDSS),based on a road weather prediction model and related software toolkit,is able to convert the data into information and advice the users what,when and where actions are needed in order to keep road network open and safe.