If a tubular tire/tyre rolls off the rim during a race, there is an automatic 3 month suspension enforced to the offending rider.
this is probably documented online somewhere
The old heads told me about this when I had some suspect singles on a set of wheels. 'Make sure they dont come off or you'll get a 3 month holiday' was the call.
At the recent Melbourne Cup on Wheels, a riders front wheel came out (insufficiently tightened!!!) and caused a major crash.
He was fined $500 + 3 months.
Jitensha: Sorry no pics. I was riding
165: Still waiting