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King's Highway 409, commonly referred to as Highway 409 and historically as the Belfield Expressway, is a 400-series highway in the Canadian province of Ontario that extends from Highway 401 in Toronto to Pearson International Airport, west of Highway 427, in Mississauga. It is a short freeway used mainly as a spur route bypass for traffic approaching the airport or Highway 427 northbound from Highway 401 westbound, as both are not accessible at the complex interchange between Highways 401 and 427. Planning for Highway 409 took place throughout the late 1960s amidst considerable controversy around its original path through the historic town of Malton. Eventually the route was changed to provide access to the airport instead of towards Brampton and completed through the mid-1970s, opening in 1978. The significance of the route has increased over the years alongside expansion of the airport. In 2000, the Greater Toronto Airports Authority (GTAA) purchased the section west of Highway 427 in order to modify the ramps leading into the airport. The speed limit along Highway 409 is east of Highway 427 and west of it. It is patrolled by the Ontario Provincial Police east of the Toronto–Peel boundary and by the Peel Regional Police to the west of it. The original name of the freeway was derived from the road running parallel to and north of it, Belfield Road. Belfield is a local road managed by the City of Toronto and runs from Kipling Avenue to Atwell Drive. == Route description == Highway 409 serves as a direct link between Highway 401, Highway 427, and Pearson International Airport. While it is not intended as a commuter route, there are several exits serving the industrial areas of Etobicoke centred on the highway. Highway 409 also serves as the only connection between westbound Highway 401 and northbound Highway 427, as no access is provided at the 401–427 interchange. Highway 409 begins at Airport Road as the knotted flyovers from Toronto Pearson Airport converge into the freeway from the various terminals.〔 Through this section to Highway 427, the highway is maintained by the Greater Toronto Airport Authority (GTAA) and has a posted speed limit of .〔 As the highway passes under Highway 427, it turns right and takes on an east-west orientation. It passes over Carlingview Drive, and begins to descend into a trench. It passes beneath Highway 27, two railway spurs, and Iron Street before returning to level grade. Around the interchange with Martin Grove Road, the freeway twists slightly to the left and right between factories and warehouses. At its eastern terminus, Highway 409 crosses Kipling Avenue and merges onto Highway 401 express and collector lanes, while the westbound collector lanes diverge and become the westbound lanes of Highway 409.〔 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 409」の詳細全文を読む スポンサード リンク
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