C-72.1, r. 4 - Rules respecting Standardbred horse races held at a professional race track

Full text
252. When the starting judge so orders, each driver shall direct his horse towards the starting gate placed approximately a quarter of a mile before the starting line.
The starting judge shall cause the starting gate to move towards the starting line, gradually increasing its speed until the required speed is reached.
When the horses reach the starting line or the safety line, as the case may be, the starting judge shall give the official signal for the start of the race.
Decision 90-09-19, s. 252; Decision 96-05-27, s. 36.