SDCL § 31-28-19: Markings resembling official signs--Obscuring official sign--Violation as misdemeanor.

No person may place, maintain, or display upon or in view of any highway any unauthorized sign, signal, marking, or device which purports to be or is an imitation of or resembles an official traffic control device or railroad sign or signal, which attempts to direct the movement of traffic, or which hides from view or interferes with the effectiveness of any official traffic control device or any railroad sign or signal. A violation of this section is a Class 2 misdemeanor.