North-Western Railway has started supplying fog devices to its divisions. This advanced device will work with GPS technology in rails. This will ensure that high-speed trains can operate without any hindrance due to fog. Trains will be able to run at the maximum permitted speed. During winter, dense fog is a common phenomenon. To improve the efficiency of goods warning boards on railway tracks, radium strips and lime powder will be used. This will help in easily understanding the foggy conditions.