The Wipeout has a green indicator light near each car. Once locked, that light will go on and stay on throughout the ride. (unless it burns out) I don't think the rides computer will allow it to start when the green light isn't on.
It's strange that after 11 years on the market, this is the first incident that has occured on a Wipeout. The other thing is, 2 years ago, Marine World had a person fall out of another dependable ride, the Scrambler.
The Wipeout, made by Chance Rides, is the newest version of the ever popular Trabant or Casino. The ride features a circular platform, with cars along the edge that spins in a coin-like motion, dipping and turning.
For a photo, go to:
www.rides.com