In London, many Underground tube stations have two escalators going up, but just one going down. Why?
This is because when people leave the train, they pack into groups, whereas when they go to catch the train, their flow is more even.
In London, many Underground tube stations have two escalators going up, but just one going down. Why?
This is because when people leave the train, they pack into groups, whereas when they go to catch the train, their flow is more even.