The Hollywood Rip Ride Rockit became stuck at 7 p.m. Wednesday, WKMG-TV, Orlando, reported.
After assessing the situation for a few hours, firefighters began rescuing the riders at the top of the coaster, which is 167 feet tall.
Rescue crews were able to move the car to a horizontal position, and help guests exit onto a platform.
They then were able to get to the ground on elevators.
One passenger, who complained of neck pain, was sent to the hospital, Universal Orlando said.
"We're happy that our guests are safely off Hollywood Rip Ride Rockit. We'll find out what happened and will reopen the ride as soon as we can," Universal said in a tweet.
Universal said a glitch caused the ride's computers to go into safety mode, and technicians began testing the ride Thursday.
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