(A) All taximeters shall be placed in such position in the taxicab so that the face thereof and the fare numerals may be easily seen and read by a passenger sitting in any part of the taxicab.
(B) When a passenger engages and enters a taxicab the flag, signal or other device affixed to such taximeter shall be placed in such position as to denote that such taxicab is employed.
(C) The taximeter flag or signal affixed to a taximeter shall not be changed from a vacant or for-hire position until the person engaging such taxicab has entered the taxicab, and at the conclusion of the trip the flag or signal shall not be changed or moved to a vacant or for-hire position until the fare is paid.
(D) No taxicab may, while occupied by any person other than the driver, be operated with the flag or signal affixed to such taximeter in such a position as to denote that such vehicle is not employed.