Accelerator Coaster

An Accelerator Coaster is a hydraulically launched roller coaster model from Intamin. The model usually consists of a long, straight launch track, a top hat tower element, and magnetic brakes that smoothly stop the train without making contact. The technology was developed by Intamin engineers as an alternative to electromagnetic launch systems, such as the linear induction motor (LIM) and linear synchronous motor (LSM), that are found on earlier launched roller coasters like the Flight of Fear and The Joker's Jinx. Unlike the earlier linear induction motors, the Accelerator Coaster's launch system exhibits constant acceleration and is capable of reaching greater speeds. Formula Rossa, the world's fastest coaster, and formerly Kingda Ka, the world's tallest, are some of the most well-known installations around the world.

Accelerator Coasters have a great track record for safety and are extremely power efficient, especially compared to older technologies such as the classic chain lift found on most roller coasters. The coaster will occasionally perform a rollback – when the train is unable to complete the track peak and rolls back to the starting point in a safely controlled manner – which can occur due to a number of different factors.

However, Accelerator roller coasters have been infamous for long terms of mechanical issues with the launch system. Examples of these include Xcelerator at Knott's Berry Farm or the former Top Thrill Dragster at Cedar Point.

As of 2022, Accelerator Coasters are no longer being produced, with the final installation having opened in 2010.