75 Pa.C.S. § 3103: Persons riding animals or driving animal-drawn vehicles.

(a) General rule.--Every person riding an animal or driving any animal-drawn vehicle upon a roadway shall be granted all of the rights and shall be subject to all of the duties applicable to the driver of a vehicle by this part, except those provisions of this part which by their very nature can have no application or where specifically provided otherwise.

(b) Limited access highways.--No person shall ride an animal or drive any animal-drawn vehicle upon a limited access highway.