Tech helps Metro stay on track
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Even as dense fog grounded rail and road traffic in the national capital the Metro service has remained largely unaffected. The DMRC officials attribute this to the automatic train control (ATC) system that ensures safe train movement and helps achieve a headway of as high as 2.5 minutes.
"The ATC provides two functions — automatic train protection and automatic train operation. The system integrates the cable signalling system and supervises train operations. This is why the Delhi Metro was unaffected by fog," a DMRC spokesperson said.
The ATC also provides data for cab display, maintains safe distance between trains (thereby avoiding accidents) and executes emergency brakes when safety limits are exceeded. The Metro also has a driver machine interface, through which the condition of the signal ahead and traffic is displayed to train operator inside the cab.
The system allows the opening of passenger doors on the correct side and at the marked position, called normal stopping point.