. "A roller coaster is a popular amusement ride developed for amusement parks. In essence a specialized railroad system, a roller coaster consists of a track that rises in designed patterns, sometimes with one or more inversions (such as vertical loops) that turn the rider briefly upside down."@en . "Roller coasters"@en . "A roller coaster is a popular amusement ride developed for amusement parks. In essence a specialized railroad system, a roller coaster consists of a track that rises in designed patterns, sometimes with one or more inversions (such as vertical loops) that turn the rider briefly upside down."@en .