Riding a horse over any public highway for the purpose of racing, or testing the speed of the horse is illegal. Penalty: Maximum $20 fine and imprisonment for 10 days.

TITLE 11
Criminal Offenses
CHAPTER 11-22
Highways
SECTION 11-22-11

§ 11-22-11 Testing speed of horse. Every person who shall drive any horse over any of the public highways, for the purpose of racing or trying the speed of the horse, shall be fined not more than twenty dollars ($20.00) or imprisoned not exceeding ten (10) days.