Trains do, yes, but not all of them - there are a whole bunch of different types of trains that use it - ones that are single deck for trucks (and has a small p

Trains do, yes, but not all of them - there are a whole bunch of different types of trains that use it - ones that are single deck for trucks (and has a small passenger car for the drivers because the truck decks aren't enclosed), ones that are mostly double deck for cars (and are enclosed, so people stay in their vehicles), high speed Eurostar trains that are just passengers/luggage and go to/from the major cities (the car and truck ones go from Folkstone to Calais and back), as well as some container freight trains.