SDCL § 32-17-47: Flashing lights required on certain animal-drawn vehicles--Violation as misdemeanor.

Any animal-drawn vehicle operating on a highway during the period from a half hour after sunset to a half hour before sunrise and at any other time when there is not sufficient light to render the vehicle clearly discernible to any person on the highway at a distance of two hundred feet ahead, shall be equipped with a flashing amber light that is visible from the front of the vehicle and a red flashing light visible from the rear of the vehicle. The red flashing light shall have a minimum diameter of four inches with at least three square inches of surface. A violation of this section is a Class 2 misdemeanor.