A starting gate consisting of two or more tapes is erected across the start line. The riders must situate themselves not more than from this and not touch it once the green light comes on, they must also remain stationary until the tapes are raised. Failure to do so is known as a "tape infringement" and can result in a false start being recorded and the rider penalised (disqualified, or in league matches in Great Britain, a 15-metre penalty or replace the disqualified rider with a team reserve). The race is started with the raising of the start tape mechanism operated by the match referee and the riders must proceed around the track in an anti-clockwise direction without both wheels illegally leaving the track boundaries.