Yesterday I travelled on the Northern Line from Bank up to Angel. When we were at Bank a young lady tried to board the train at the very last moment. As she got on the train, the doors behind her closed and her backpack became stuck in the door. A guy tried to push the doors open without any success. Eventually the driver opened the doors and the young lady was able to board.
Then another passenger with a backpack tried to board and the same thing happened. This time a young lad on the platform, presumably to show how strong and manly he was tried to open the doors. He stuck his foot against one of the doors and at the same using his body pushed against the other. Well it didn't work, he couldn't open the doors. The driver opened the door and the passenger was able to board and we evenly started to move.
However when another passenger leant against the door when the train was moving, it looked as if the two rubber seals on the doors moved apart. It sort of looked as if the doors opened just a bit.
Is this likely and if so did the actions of the two people trying to open the doors cause this?
Post by tubetraveller on Mar 10, 2017 17:57:12 GMT
The doors on most trains are air operated, so there is a little bit of give if you were to try and pull the door back when it's closed - usually about an inch or two.
Once the doors are closed, a locking bar falls into place in the door mechanism to stop it opening any further than that.
This is also usually what's happening when a train has a 'false start' when it's leaving the station in peak times. People lean on the doors and they get pulled open a little - this cuts power to the motors and the train jerks to a stop