As North India continues to reel under dense fog, the Indian Railways has installed a fog-safety device in the trains to prevent their long delays in winters.

"We have used the GPS technology in the device with a map of tracks, signals, stations and level crossing of the Northern Railway in it. It alerts loco pilot about level crossing/signal. When drivers know there are no hurdles, they can increase the speed", Northern Railway Chief Public Relations Officer (CPRO) Nitin Chowdhary told ANI.