Railways have planned to use GPS-enabled fog safety devices in the trains to alert the loco pilot about approaching signals.
A railway official told IANS that plans were afoot to use the GPS-based devices in trains that would provide advance warning.
The official said that the Railways has provided about 2,400 of these devices in northern India where trains are worst-hit by intense fog during winter.
He said 900 of these GPS devices have been given to the Delhi zone.
Besides, the Railways will also deploy frogmen to place detonators on the tracks to alert the loco pilots about approaching signals.
Officials will undertake intensive night foot plate inspection and track patrolling to detect cases of rail fracture, a major cause of derailment during winter.