A dozen people were stuck for more than two hours after a roller coaster at Universal Studios Florida came to a stop 150ft (45m) above the ground.
The Hollywood Rip Ride Rockit ride stopped at around 7pm because of a technical glitch that caused computers to go into safety mode, officials said.
Several trains were on the track when the ride stopped, and park workers were able to help those passengers off almost immediately.
However, the final 12-person train was stuck in a vertical position, more than 150ft above the ground.
The riders were rescued two and a half hours later.
The reason the rescue took so long is because park officials wanted to do it safely, Universal spokesman Tom Schroder said.
"We spent a lot of that time talking to the passengers and trying to make them as comfortable as we could," Mr Schroder said.
No serious injuries were reported, but one woman complained of neck pain and went to the hospital as a precaution.
Park officials will now investigate what caused the glitch. It is not yet clear when the ride will be running again.
