I understand and appreciate that, but unless it goes insanely slow, if some error occurs, on every other ride system, the solution is to cease motion.
If a ride vehicle has a fault while going 50 miles per hour, that fault means it can't continue the existing path/the autonomous system doesn't trust the input/output relationship. On a tracked system, where velocity can only be added/removed, removing velocity at a fault is not an issue, but with this, removing velocity isn't enough when you don't know where you're going.