This keeps the cars from flying up into the air. The car also has another set of wheels (or sometimes just a safety bar) that runs underneath the track. In most coasters, the car wheels have the same flanged design as the wheels of a train the inner part of the wheel has a wide lip that keeps the car from rolling off the side of the track. The tracks of wooden roller coasters are similar to traditional railroad tracks. There are two major types of roller coasters, distinguished mainly by their track structure. ![]() OzIris is an example of an inverted roller coaster located at Parc Astérix in Plailly, Picardie, France.
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