- GregLv 71 month agoBest Answer
They are electric trains and the 3rd rail provides the electricity. They are deadly.
- thebax2006Lv 71 month ago
The center rail has power for the electric motor.
- CBLv 71 month ago
Trains don't have 3rd rails, Tracks have third rails.
- RickLv 61 month ago
It's for the electricity that powers the train ...................