The track stand[1] or standstill[2] is a technique that bicycle riders can use to maintain balance while their bicycle remains stationary or moves only minimal distances. The technique originated in track cycling and is now used by other types of cyclists wishing to stop for a short time without putting a foot on the ground, such as bike commuters at stop signs. To perform a track stand, a cyclist holds the cranks in an approximately horizontal position with the front wheel steered to the left or right, and pedals forward, and back in the case of a fixed-gear bicycle, which the steered front wheel converts into a side-to-side motion.
The track stand, named for the ability of velodrome racers to balance their fixed-gear bikes on the track, can help you stay upright without unclipping, and it lets you take off quickly.
A maximum of two standstills shall be permitted for each race. The maximum period for a standstill shall be 30 seconds