New ice warning system to increase safety on Swedish highway E4

The temperature can vary a full 7 degrees between Stora Essingen and Södertälje, a 30 kilometer stretch of highway close to Stockholm maintained by PEAB, one of Sweden’s largest contractors of road maintenance. By installing weather sensors into the road surface PEAB will improve the quality of the road weather forecasts used for planning anti-icing work. Slippery roads may be prevented in time and safety could be increased by fairly simple means.Vårby Backe, a slope on E4 highway just south of Stockholm, is one of Sweden’s busiest and most dangerous traffic points. In icy and snowy weather