Eastern Quebec near the border (just west of Dégelis from my memory) to just west of Fredericton has yet to be converted to 4 lane in most areas. The TCH goes from Fredericton to Moncton, but Hwy7 (Fredericton-Saint John) has yet to be updated to 4 lanes as well, for the most part, though I believe Hwy1(Saint John-Moncton) is now mostly 4 lane. The TCH is 4 lane divided from Fredericton to Truro (where you take the 102 to Halifax...also 4 lane divided though 5 or 6 lanes in some short spurts approaching Dartmouth) and on through to New Glasgow...though east of New Glasgow it's still undivided yet to be updated highway through to North Sydney for the most part. The 125 from North Sydney to Sydney is about 40-50% 4 lane divided, with the rest being 2-4 lane undivided. Hope that's helpful. 