Sec. 521.024.  RESTRICTIONS ON CERTAIN COMMON CARRIERS.  (a)  A person under 18 years of age may not operate a motor vehicle while that vehicle is in use as a public or common carrier of persons unless the person is licensed to operate the vehicle.
(b)  A person may not operate a taxicab unless the person is at least 18 years of age.
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.