If any of the above violations are committed by a person driving a horse coupled as an entry in the betting, the judges may set both horses back, if, in their opinion, the violation may have affected the finish of the race. Otherwise, penalties may be applied individually to the drivers of an entry.
58 Pa. Code § 183.283
This section cited in 58 Pa. Code § 183.289 (relating to use of goading devices and the like).