in trains, when they have different carriages that you can walk into, why do they have doors on them? Why not just have an open train?

Question

This is for trains in the UK that are near London, I don’t know if it’s the same in other places.

In: 0

Answer 1

Because of weather. People don’t like to be cold or wet. Not to mention protection from other things such as mechanical failures. If something comes loose, you at least have a small amount of protection that could help.