As used in this chapter, the following terms shall have the meanings indicated:
TAXICAB
Includes any automobile or motor vehicle engaged in the business of carrying passengers for hire which is held out, announced, or advertised as operating or running over the public streets in the City, which accepts and discharges passengers who may offer themselves for transportation from points or places within the City to points or places within or without the City; provided however, that the word "taxicab" shall not be deemed to include, and this chapter shall have no application to, a bus, jitney, limousine or other vehicular service operating upon a fixed route by authority of any ordinance or statute or any franchise or permit issued pursuant to any such ordinance or statute.