I go today in the subway (St. Petersburg) on the Baltic (in the direction of the bridge). Veterans), the doors are closed, after a while they are opened again, we are waiting. Then the driver announces the train is not going further please leave the wagons. Everyone leaves the cars and we wait. This is happening further. The engineer says the train should still go further back into the wagons. Everyone comes back. After that I understood that the machinery can fucking everything.