No taxicab shall be driven, operated or controlled so as to violate any of the parking or traffic provisions of this code or so as to obstruct traffic or interfere with the free movement of traffic upon any street, alley or public place. No person shall drive, operate or control any such taxicab while under the influence of intoxicating liquor, and no driver shall drink any intoxicating liquor, either inside or outside of said taxicab during the hours he is driving or on duty with said taxicab.
('71 Code, § 4-16-8) Penalty, see § 10.99