(A) The driver of any vehicle shall obey the directions of any official traffic control device placed in accordance with the traffic ordinances of the city, subject to certain exceptions, which are granted the driver of any authorized emergency vehicle in § 70.04, unless otherwise directed by a police officer.
(B) No provision of this subchapter which provides for signs shall be enforced against an alleged violator if, at the time and place of the alleged violation, such official sign was not in proper position or was insufficiently legible to an ordinarily observant person. Whenever a particular section does not stipulate signs, such sections shall be effective without signs being placed to give notice thereof.
(Prior Code, § 70.20)