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King's Highway 12, commonly referred to as Highway 12 and historically known as the Whitby and Sturgeon Bay Road, is a provincially maintained highway in the Canadian province of Ontario. The highway connects the eastern end of the Greater Toronto Area (GTA) with Kawartha Lakes (via Highway 7), Orillia and Midland before ending at Highway 93. It forms a part of the Trans-Canada Highway system from north of Sunderland to Coldwater. Highway 12 connects several small towns along its route, and bypasses a short distance from many others. It is signed as a north–south route between Whitby and Orillia, and as an east–west route from there to Midland. The rural portions of the highway feature a posted speed limit of , often dropping to through built-up areas. The entire route is patrolled by the Ontario Provincial Police. Highway 12 was first established in early 1922 between Highway 2 in Whitby and Lindsay. The section running east from Sunderland became part of Highway 7 before route numbering was introduced in 1925. Highway 12 was then routed through Beaverton and around the eastern and northern shores of Lake Simcoe to Orillia and later to Midland; Beaverton was bypassed during the 1960s. The section south of Highway 7 in Brooklin was transferred to the Regional Municipality of Durham in mid-1997 and redesignated as Durham Regional Highway 12. A majority of Highway 12 follows the historic Whitby and Sturgeon Bay Road, constructed in the mid-1800s to connect Whitby and Penetanguishene, both important naval ports of the time. == Route description == The highway begins at the hydro easement (the future location of Highway 407) just south of the community of Brooklin in the town of Whitby.〔 It travels north and joins with Highway 7 on the southern edge of Brooklin. Highway 7 travels west to Markham, and is signed concurrently with Highway 12 for north of this point to Sunderland. North of Sunderland, Highway 7 separates and travels east to Lindsay; Highway 12 thereafter is designated as the Central Ontario Route of the Trans-Canada Highway. The highway continues north, following the eastern and northern shores of Lake Simcoe and bypassing Beaverton while curving to the northwest towards Orillia. It bypasses south of Orillia, and shares a routing with Highway 11 northwards for approximately two kilometres between interchanges 131 and 133. At the latter interchange, Highway 12 branches northwest towards Coldwater, where it joins Highway 400 between interchanges 141 and 147; this concurrency is not signed.〔 At Waubaushene, the Trans-Canada Highway designation continues north along Highway 400 towards Parry Sound and Sudbury, while Highway 12 continues west towards Victoria Harbour, Port McNicoll, and the Martyrs' Shrine.〔 The highway ends at a junction with Highway 93 at the western town limits of Midland.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ontario Highway 12」の詳細全文を読む スポンサード リンク
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