5.-(1) Within the area of a municipal corporation the Council may erect, or cause to be erected, or authorize the erection in specified places of, hoardings on which advertisements may be displayed.
(2) In relation to any hoarding erected or caused to be erected or of which the erection is authorized under subsection (1) the Council shall have power to specify the period during which such hoarding shall remain erected or any advertisement shall be displayed thereon and, without prejudice to any powers conferred upon the Council by this Law or any bye-laws made thereunder, to impose conditions as regards the proper maintenance of such hoardings or advertisements.
(3) Within an Improvement Area the Improvement Board may erect, or cause to be erected, hoardings on which advertisements may be displayed.
(4) In relation to any hoarding erected or caused to be erected under subsection (3) the Improvement Board shall have power to specify the period during which such hoarding shall remain erected or any advertisement shall be displayed thereon and, without prejudice to any powers conferred upon the Improvement Board by this Law or any bye-laws made thereunder, to impose conditions as regards the proper maintenance of such hoardings or advertisements.