(1) It shall not be lawful for any person who is not a licensed conductor to act as conductor of a public service vehicle while such vehicle is being used to carry passengers for reward.
(2) If any person acts as conductor of a public service vehicle in contravention of this section, such person and also the licensee of such vehicle shall each be guilty of an offence under this section and shall on summary conviction thereof be liable to a fine not exceeding twenty pounds.
(3) Nothing in this section shall render it unlawful for the driver of a public service vehicle on which it is not obligatory under this Part of this Act to carry a conductor to act as conductor as well as driver of such vehicle although he is not a licensed conductor.