(A)   The driver of any vehicle shall not turn the vehicle so as to proceed in the opposite direction upon any street in the city, except at an intersection, and, furthermore, it is unlawful for the driver of a vehicle to make a turn at any intersection:
      (1)   Where traffic-control signals are installed;
      (2)   Where a police officer is directing traffic, except at the latter’s direction; or
      (3)   Where an official no U turn sign has been placed and is maintained.
   (B)   When otherwise permitted, a U turn may be made only when it can be made in safety and without interfering with other traffic.
(`90 Code, § 20-54)