There shall be posted in each taxicab, for the convenience and information of the
passengers, in such manner as to be easily read by any passenger therein, a card or
sign, plainly legible, showing the rates of fare under which such taxicab is operating;
and the driver shall not demand or be entitled to collect any fare for the conveyance
of a passenger unless the card or sign bearing the rates of fare shall be conspicuously
displayed; nor shall the driver charge or collect a rate of fare greater than that
revealed on the card or sign. Each taximeter installed in such licensed taxicab shall
be in accordance with the rates of fare authorized and displayed on such card or sign
and not otherwise.