▁of ▁Ontario ▁( M TO ) ▁and ▁pat rolled ▁by ▁the ▁Ontario ▁Provin cial ▁Police . ▁The ▁speed ▁limit ▁is ▁ ▁throughout ▁its ▁length , ▁with ▁the ▁only ▁exceptions ▁the ▁posted ▁ ▁limit ▁west bound ▁in ▁W inds or ▁and ▁in ▁most ▁construction ▁zones . ▁ ▁By ▁the ▁end ▁of ▁ 1 9 5 2 , ▁three ▁individual ▁high ways ▁were ▁number ed ▁" High way   4 0 1 ": ▁the ▁partially ▁completed ▁Toronto ▁B yp ass ▁between ▁West on ▁Road ▁and ▁Highway   1 1 ▁( Y on ge ▁Street ); ▁Highway   2 A ▁between ▁West ▁Hill ▁and ▁New castle ; ▁and ▁the ▁Sc en ic ▁Highway ▁between ▁Gan ano que ▁and ▁Bro ck ville , ▁now ▁known ▁as ▁the ▁Th ous and ▁Islands ▁Park way . ▁These ▁three ▁sections ▁of ▁highway ▁were ▁ 1 1 . 8 , ▁ 5 4 . 7 ▁and ▁ 4 1 . 2   km , ▁( 7 . 3 , ▁ 3 4 . 0 ▁and ▁ 2 5 . 6   mi ), ▁respectively . ▁In ▁ 1 9 6 4 , ▁the ▁route ▁became ▁fully ▁navig able ▁from ▁W inds or ▁to ▁the ▁Ontario – Que bec ▁border . ▁In ▁ 1 9 6 5 ▁it ▁was ▁given ▁a ▁second ▁design ation , ▁the ▁Mac don ald – Cart ier ▁Fre ew ay , ▁in ▁honour ▁of ▁two ▁F athers ▁of ▁Confeder ation . ▁At ▁the ▁end ▁of ▁ 1 9 6 8 , ▁the ▁Gan ano que – B