All traffic-control devices and signs and speed limit signs heretofore erected and now existing are adopted as traffic-control signs and devices and speed limits in the county, and no driver of a vehicle shall disobey the instructions of the traffic-control devices or signs and the speed limit signs.
(Prior Code, § 70.07) (Ord. 1035A, passed 7-15-1987) Penalty, see § 70.99