(a) The commission shall adopt rules to regulate wagering on horse races and greyhound races under the system known as pari-mutuel wagering.
(b) Rules adopted under this subtitle must include rules to:
(1) regulate wagering by a person licensed under this subtitle;
(2) prohibit wagering by a commission employee;
(3) prohibit a racetrack association from accepting a wager made by telephone; and
(4) prohibit a racetrack association from accepting a wager made on credit.
(c) Commission rules adopted under this subtitle must be written and updated to ensure maximum enforceability.