It's also the reason why metal detectors are now installed on several rides---well, more accurately, a handful of idiots riding this are the reason.
These used to be timed so that they "crossed" each other several times over the course of the ride. Someone thought it might be a neat idea to throw coins at the other train at some of these crossing points, and one guest lost an eye due to injuries in such an incident. That's why the dragons no longer duel, and it led in part to the very strict loose articles policy in place now at UNI.
Wow! Thanks for sharing this - I had no idea what happened to add the metal detectors. Now, I don't mind them at all.