No provision of this title which provides for signs shall be enforced against an alleged violator if, at the time and place of the alleged violation, such official sign is not in proper position or is insufficiently legible to an ordinarily observant person. Whenever a particular section does not provide for signs, such section shall be effective without signs being placed to give notice thereof.
(Code 2019, § 13-6) (Code 1961, § 16-24)