SDCL § 32-17-18: Turn light requirements--Visibility--Violation as petty offense.

If a motor vehicle is equipped with a signal lamp to comply with the provisions of § 32-26-23, the signal lamp shall be so constructed and located on the vehicle as to give a signal, yellow or red in color, which shall be plainly visible in normal sunlight from a distance of one hundred feet to the rear of the vehicle but may not project a glaring or dazzling light. A violation of this section is a petty offense.