57. The driver’s licence for:(1) Classes A and B: authorizes the holder to drive a racehorse in races held at a professional or amateur race track;
(2) Class C: authorizes the holder to drive a racehorse:(a) in qualifying or schooling races held at a professional race track;
(b) in races held at an amateur race track;
(3) Class D: authorizes the holder to drive a racehorse:(a) at a special event approved by the Régie and held at a professional or amateur race track;
(b) in races held at an amateur race track.