A Vigilance control device (VCD) is a safety device designed and installed in Electric locomotive to keep the loco pilots in the vigilant state. These devices are available in all the Electric locomotives in Indian railways since the year 2003. Having served more than 15 years in the locomotive, the performance of the VCD in keeping the loco pilots is critically analyzed. Further, it is proposed the design of an embedded system that will function as an intelligent drowsiness detection and warning system. This proposed system will replace the existing Vigilance control device of the locomotive with additional and essential features of detection of drowsiness in early-stage and alert the Crew of the Train operation. The system will have advantages over the existing Vigilance control device it detects the drowsiness for behavioral measures in a non-invasive way, which will be preventing the Signal Passing at Danger (SPAD) in Electric locomotives