Patent ID: 8453577

Claim:
A method of repairing or maintaining a roller coaster track or track support which is part of a roller coaster system having roller coaster cars which are propelled along the coaster track, comprising: a) causing a roller coaster maintenance vehicle to traverse at least a portion of said roller coaster track, said roller coaster maintenance vehicle having (i) a platform, (ii) a set of wheels operatively mounted to said platform and arranged to engage and ride on said at least one roller coaster track, said set of wheels including at least two wheels with axes of rotation substantially orthogonal to each other, (iii) a maintenance vehicle propulsion system mounted to said platform and arranged to propel said platform along said at least one track structure, said maintenance vehicle propulsion system being independent of the roller coaster propulsion system, and (iv) a repair tool supported by said maintenance vehicle; and b) using said repair tool to repair or maintain the roller coaster track or track support, wherein said roller coaster maintenance vehicle has a receiver for receiving remote control signals, and said causing and said using are accomplished by remote control signaling by an operator located off of said roller coaster track using a remote control apparatus.