No person, firm, corporation, or limited liability company may sell or offer for sale to street and highway authorities, and no such authorities may purchase or manufacture any traffic-control device which does not conform to the manual unless specifically approved by the director.
N.D. Cent. Code § 39-13-08
No traffic-control device to be manufactured or sold which does not conform
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.