SDCL § 32-18-25: Safeguard against air backflow from reservoir through supply line--Violation as misdemeanor.

Air brake systems installed on trailers manufactured or assembled after July 1, 1967, shall be so designed that the supply reservoir used to provide air for the brakes shall be safeguarded against backflow of air from the reservoir through the supply line. A violation of this section is a Class 2 misdemeanor.