How is waiting time so less for metro trains in India given the fact that the tracks are straight and not in a loop. I want to ask how many trains/how do these trains work on a single one way track? Like does a train go from end to end ? If yes, then how is waiting time so less ?
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Often metro systems work on a ‘stepping back’ system. So when a train arrives at the terminus, the driver 1 gets out and starts walking towards the front of the train. Meanwhile a driver 2 that was waiting at the end of the platform steps in and starts away.
Driver 1 is then waiting at the end of the platform when the next train comes in.
Most trains are “two-headed” with a locomotive on either end. The driver switches sides at the end/depot station, effectively reversing the train without turning around.
When train reaches the end it goes onto a special “parking” dead end track that’s connected to both directions. Driver moves to the other locomotive and transfers the train to a reverse track.
As for time intervals – it’s just a lot of trains and a strict schedule. If some emergency happens, the entire line halts for a while.
> and not in a loop.
Loops in metro systems are generally a bad idea as they can cause delays that are hard to combat. This is the reason why the circle line on the London Underground is no longer a circle and as such is subjected to much less disruption than when it was a loop. The circle line also shares tracks with other lines which meant that the delays also affected those other lines.
Straight lines are much easier to manage.
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