eli5: with roller coasters, when the trains come to a complete stop in the break run before the station, how do the trains start moving again to enter the station?

Question

eli5: with roller coasters, when the trains come to a complete stop in the break run before the station, how do the trains start moving again to enter the station?

In: 1

Answer 1

They use a chain underneath the roller coaster to grab a hook on the underside of the cars, and a motor moves the chain to tow it into station, similar to how they get it up the hills on the tracks.