Trackstands (a trick in which a rider, usually on a fixed-gear bike, keeps balanced with zero speed, by pedalling back and forth with minimum displacement) can be employed either on the track or on the streets, mainly at traffic lights.
In the track, the rider can slow down and create a hard time for an opponent. On the traffic light, one can keep himself on the bike and be ready to go. That makes the trick "desireable", so it is either regulated on official events, and used itself for "trackstand competitions", mostly in the fixie subculture.
What I have to ask is:
- What are the UCI criteria for the judge to stop the countdown for trackstand duration?
- What are the criteria traditionally used on informal competitions for taking a "competitor" out?
- What SHOULD BE a reasonable way to tell when a rider degenerated from a correct trackstand to something else (forward or backward movement, too large a change in position, etc.)?
Thanks for reading!