The roller coaster (the term jet coaster is sometimes used for roller coasters in Japan) is a popular amusement ride developed for amusement parks and modern theme parks. LaMarcus Adna Thompson patented the first roller coaster on January 201885. In essence a specialised railroad system, a roller coaster consists of a track that rises in designed patterns, sometimes with one or more inversions (such as loops) that turn the rider briefly upside down. The track does not necessarily have to be a complete circuit, as shuttle roller coasters exhibit. Most roller coasters have multiple cars in which passengers sit and are restrained into. An entire set of cars hooked together is called a train. Some roller coasters, notably Wild Mouse roller coasters, run with single cars.
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