3. Where texts both in French and in another language appear on separate signs or posters of the same size, the text in French is deemed to have a much greater visual impact if the following conditions are met:
(1) the signs and posters bearing the text in French are at least twice as numerous as those bearing the text in the other language;
(2) the characters used in the text in French are at least as large as those used in the text in the other language; and
(3) the other characteristics of the signs or posters do not have the effect of reducing the visual impact of the text in French.