ScenicRailway

A Scenic Railway is a form of Side Friction coaster. The trains aren't held onto the track in any way. However, Scenic Railways are the oldest surviving type of thrill coaster left. Unlike a normal Side Friction coaster where the speed has to be constantly kept low, a Scenic Railway has a "brakeman". In the middle of the train, the brakeman slows the ride when it's running too fast to go over a hill or around a corner.

Obviously this takes a lot of skill and practice, the riders lives are in his hands after all. A good brakeman can make a Scenic Coaster exceptionally thrilling for their age by keeping the speed up, but safe.

The reason they're called Scenic Railways? They used to be put inside massive fabricated structures showing scenes from around the world.