3. Subject to the provisions of sections 4 and 7, it is forbidden to put up a poster so as to be seen from a road which the Minister of Transport maintains, except in the cases where:(a) The poster is placed at a distance of at least 30 m from such a road and provided its length does not exceed 3 m nor its width 2,50 m;
(b) The poster is placed at a distance of at least 60 m from such a road and provided its length does not exceed 7,60 m nor its width 4 m;
(c) The poster is placed at a distance of at least 90 m from such a road and provided its length does not exceed 15 m nor its width 5 m.In all such cases, the poster must be placed at most 1,50 m from the ground on a structure erected solely for that purpose, and it must bear the name and address of its owner.