Each car operates with its own computer, and there is no one master computer controlling all of the cars. The main computer can perform an emergency stop of the vehicles. Because each car is self-controlled, it takes enormous testing to get the cycle timing correct so the cars don t get too close to each other. With the maximum cycle involving 28 cars, this is a programming challenge. Test Track is definitely on the cutting edge of technology, said Orrin Shively of Walt Disney Imagineering.
Safety is paramount and technology is geared to it.
There are 194 zones throughout the track. If a vehicle misses reading two tags in a row then it will cause a zone stop. If the belts are not locked or there is low tyre pressure, it will result in a stop. Testing before the launch is severe. The vehicle failed to decelerate, and the bogey chain snapped.