Powered Coaster
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A Powered Coaster is a roller coaster which relies on a motor in the train to complete the course, often replacing a traditional chain lift hill. This allows for both compact layouts that start out with curving hills, or long, extended layouts that would need too many lifts to be feasible. The most common manufacturers of powered coasters are Mack, Wisdom Rides, and Zamperla.
The most common model of Powered Coasters are Stealth (Thorpe Park UK),the Zamperla Dragon coasters (also called "Dragon Wagons," although there are non-powered versions of these coasters). Other installations include Casey Junior, Le Petit Train du Cirque at Disneyland Park (Paris) (built by Vekoma), Thunder Run at Paramount Canada's Wonderland, and The High in the Sky Seuss Trolley Train Ride at Islands of Adventure.