(A) The License Officer shall, within a reasonable time after receipt of an application as provided for herein, cause such investigation as he deems necessary to be made of the employee driver or attendant and no such person shall be so employed by the ambulance licensee unless he:
(1) Is not addicted to the use of intoxicating liquors or narcotics, and is morally fit for the position;
(2) Is able to speak, read and write the English language;
(3) Is free of physical defects or disease which might impair the ability to drive or attend an ambulance; and
(4) Has a currently valid certificate evidencing successful completion of a course of training equivalent to the advanced course in first aid given by the American Red Cross or the United States Bureau of Mines.
(B) No one shall be employed as a driver or attendant driver unless he holds a currently valid public passenger's permit from the state.
('85 Code, § 26.16)