(1) The vehicle plate issued under this Part of this Act in respect of a public service vehicle shall be affixed to such vehicle in the prescribed place and manner and shall always be carried so affixed when such vehicle is used for the carriage of passengers for reward.
(2) If a public service vehicle is used for the carriage of passengers for reward without having affixed thereto in the prescribed place and manner a vehicle plate issued under this Part of this Act in respect of such vehicle or with such vehicle plate so defaced or obscured that the serial number or all or any of the letters, words, numbers, and designs required by this Act to be marked thereon are obliterated or illegible, the owner of such vehicle and also the driver thereof shall each be guilty of an offence under this section and shall be liable on summary conviction thereof to a fine not exceeding two pounds.