No taxicab shall be managed, operated, or controlled by any person while under the influence of any intoxicating or spirituous liquor nor so as to violate any parking or traffic ordinance of this city, nor stand, or be managed, operated, or controlled so as to obstruct traffic, or so as to interfere with the free movement of traffic upon any street, alley, or public way in this city.
(`79 Code, § 112.055) Penalty, see § 10.99