It is unlawful for any person to operate a vehicle by turning so as to proceed in the opposite direction upon any street, except at a street intersection, and then only if the street intersection is not sign-posted prohibiting a U-turn, or marked as a stop or yield intersection for traffic from any direction; provided, that any person making a permitted U-turn shall yield the right-of-way to all other vehicles.
(Prior Code, § 8.10) Penalty, see § 70.99