It shall be unlawful for any person or corporation engaged in the business of selling house trailers at wholesale or retail to sell or offer for sale any house trailer which is not equipped with the brakes required by this subsection.
This subsection shall not apply to house trailers being used as dwellings, or to house trailers not intended to be used or towed on public highways and roads. This subsection shall not apply to house trailers with a manufacturer's certificate of origin dated prior to December 31, 1974.
N.C. Gen. Stat. § 20-124