56. (1) For the purposes of interpretation of this subdivision, the word “autoroute” means a public highway defined as an autoroute by the Minister and specially identified as such by an official traffic sign. Such word does not include an autoroute within the meaning of the Autoroutes Act (chapter A-34).Every official traffic sign identifying a public highway as an autoroute is proof that such public highway is an autoroute for the purposes of the application of this subdivision. The Minister must keep a register of the public highways that he determines to be autoroutes and that are identified as autoroutes by official traffic signs.
(3) Without restricting the scope of subsection 2, no person shall drive at a speed:(a) of less than sixty kilometres per hour or more than one hundred kilometres per hour on an autoroute;
(b) in excess of ninety kilometres per hour on numbered highways surfaced with concrete, asphalt or a similar material outside cities, towns and villages;
(c) in excess of eighty kilometres per hour on other roads surfaced with concrete, asphalt or a similar material outside cities, towns and villages;
(d) in excess of seventy kilometres per hour on gravel roads outside cities, towns and villages;
(e) in excess of sixty kilometres per hour on earth roads outside cities, towns and villages;
(f) in excess of fifty kilometres per hour in cities, towns and villages, except on autoroutes and on roads or parts of roads on which the provincial authority has erected official traffic signs in accordance with section 57;
(g) in excess of fifty kilometres per hour in school zones at times when pupils enter or leave school.