Loco-pilots hold the final safety key
(WorldNews India)

South Central Railway (SCR) does have an automatic signalling system and there are in-built safety mechanisms like a fail safe derailing switch to forcibly halt a train in case it jumps a signal. The train derails before it reaches the next signal. Yet, the onus is on the loco-pilot to maintain utmost safety. If the MMTS train from Lingampally had moved further more, the derailing switch would have come into play and derailed it before the main...