3.—(1) Subject to the provisions of these Regulations and to rules, any person present travelling by, present on or leaving a train shall, if required to do so by or on behalf of the operator of that train in accordance with these Regulations and with rules, produce a ticket or other authority authorising his travelling by or his being present on that train, as the case may be.
(2) Subject to the provisions of these Regulations and to rules, any person present in or leaving a compulsory ticket area, other than a person leaving a train, shall, if required to do so by or on behalf of the operator of a train in accordance with these Regulations and with rules, produce a ticket or other authority authorising him to be present in or leave that compulsory ticket area.
(3) Any requirement imposed pursuant to this regulation shall be imposed by an authorised collector in the manner specified in rules.