—(1) No person shall, without the written approval of the Postal Authority —
lay or carry any mains, pipes, conduits, circuits or wires in, along, through, across, over or under any street or place in a manner which is likely to interfere with or cause damage to any installation or plant used for posts; or
affix any placard, advertisement, notice or other thing in or on, or paint, tar or in any way disfigure any installation or plant used for posts.
(2) Any approval under subsection (1) may be refused by the Postal Authority or granted by the Postal Authority on such terms and conditions as it may determine.
(3) Where the commission by any person of an offence under subsection (1) is due to the act or default of some other person, that other person shall be guilty of the offence.
(4) A person may be charged with and convicted of the offence by virtue of subsection (3) whether or not proceedings are taken against the first-mentioned person.
(5) In any proceedings for an offence under subsection (1), it shall, subject to subsection (6), be a defence for the person charged to prove that he took all reasonable steps and exercised all due diligence to avoid committing the offence.
(6) Where the defence provided by subsection (5) involves an allegation that the commission of the offence was due to the act or default of another person, the person charged shall not, without leave of the court, be entitled to rely on that defence unless, within a period ending 7 clear days before the hearing, he has served on the prosecutor a notice in writing giving such information identifying or assisting in the identification of that other person as was then in his possession.
(7) Any person who contravenes or fails to comply with subsection (1) shall be guilty of an offence and shall, in addition to the forfeiture of any equipment seized, be liable on conviction to a fine not exceeding $10,000 and, in the case of a continuing offence, to a further fine not exceeding $1,000 for every day or part thereof during which the offence continues after conviction.