The driver of a vehicle shall not back the same into any intersection or over a crosswalk and shall not in any event or at any place back a vehicle unless such movement can be made in safety and he shall have given ample warning to those who may be behind by hand and horn or other signal.
('70 Code § 23-25) (Ord. 1972-18, passed 3-15-72) Penalty, see § 70.99