15.—(1) Any person may apply to the licensing authority to be appointed to conduct tests of persons employed or proposed to be employed by him as drivers, and the licensing authority may, if he is satisfied that—
(a)the number of drivers of motor vehicles ordinarily employed by the applicant exceeds 250;
(b)proper arrangements will be made by the applicant for the conduct of such tests in accordance with these Regulations; and
(c)proper records of such tests and the results thereof will be kept by the applicant,
grant the application subject to any special conditions which he may think fit to impose.
(2) The licensing authority may at any time revoke an appointment made by him under this regulation and the authority to conduct tests shall thereupon cease.