Roller coasters have height requirements for riders. The safety harnesses and belts built for a roller coaster will only secure a person of a particular size into them. Rides also have positions that riders must maintain during the ride for their safety. This is why an announcement will be made to keep your hands and feet inside and use the safety bars to hold on to during the ride. By placing your hands on these safety bars, you are putting your body into the position for safety on the ride.
The safety ratchet is a chain that pulls the roller coaster up steep inclines, but also prevents it from sliding back. The safety ratchet creates a loud clicking noise as you go up the steep inclines of the ride. Each roller car and chain has its own catch pocket so that each time the car rolls over a pocket these pieces snap together to hold the cars in place in the event the ride is stopped.
Roller coasters have a brake system that uses compressed air. The majority of air brake systems on modern roller coasters are computer operated, however they will typically have an emergency switch so the roller coaster operator can stop the ride in case of an emergency.
Safety harnesses or belts secure riders into the ride and typically lock into place so the rider cannot get out during the ride. Harnesses secure riders by coming over the shoulders and around the chest and waist. Rides that do not have loops or extensive inclines secure riders with a bar that comes across the waist line.
Technology has changed the way roller coasters operate. Roller coasters are computer-operated, which reduces the risk of human error during operation. Computers are programmed to stop cars when alarm sensors go off on the track, prevent car collisions and maintain the ride at a safe speed.
