It shall be unlawful for any taxicab driver, while on duty, to be under the influence of, or to drink any intoxicating beverage or beer; to use profane or obscene language; to shout or call to prospective passengers; to unnecessarily blow the automobile horn; or otherwise unreasonably to disturb the peace, quiet and tranquility of the city in any way.
(2011 Code, § 9-414)