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| direction_a = North | end_a = Mitchell Freeway (State Route 2), | exits = | direction_b = South | end_b = Forrest Highway (State Route 2), | through = , , | show_links = yes }} The Kwinana Freeway is a freeway in and beyond the southern suburbs of Perth, Western Australia, linking central Perth with Mandurah to the south. It is the central section of State Route 2, which continues north as Mitchell Freeway to Joondalup, and south as Forrest Highway towards Bunbury. A section between Canning and Leach highways is also part of National Route 1. Along its length are interchanges with several major roads, including Roe Highway and Mandjoogoordap Drive. The northern terminus of the Kwinana Freeway is at the Narrows Bridge, which crosses the Swan River, and the southern terminus is at Pinjarra Road, east of Mandurah. Planning for the Kwinana Freeway began in the 1950s, and the first segment in South Perth was constructed between 1956 and 1959. The route has been progressively widened and extended south since then. During the 1980s, the freeway was extended to South Street in Murdoch, and in June 2001, it reached Safety Bay Road in Baldivis. The final extension began as the New Perth Bunbury Highway project, constructed between December 2006 and September 2009. In early 2009, the section north of Pinjarra Road was named as part of the Kwinana Freeway, with the remainder named Forrest Highway. The freeway has been adapted to cater for public transport, with the introduction of bus priority measures in 1987, and the 2007 opening of the Mandurah railway line, constructed in the freeway median strip. == Route description == The Kwinana Freeway is the central section of State Route 2. It commences at the northern end of the Narrows Bridge, Perth, continuing south from the Mitchell Freeway, and terminates at the Pinjarra Road interchange at Barragup, where it then transitions to Forrest Highway. All intersections with the freeway are grade separated.〔〔 The speed limit is north of Safety Bay Road and to the south.〔(【引用サイトリンク】url=http://gis.mainroads.wa.gov.au/roadinformationmap/ )〕 From Perth to Mill Point Road, the freeway has five lanes northbound and six lanes southbound. This includes a bus lane in each direction, except on the Narrows Bridge, which only has a southbound bus lane. South of Mill Point Road to Roe Highway the freeway has three lanes in each direction, without any bus lanes except for bus-only ramps at the Canning Bridge interchange. Beyond Roe Highway the freeway has two lanes in each direction.〔 The median strip of the freeway north of The Spectacles also houses the Mandurah railway line. A shared pedestrian and bicycle path is built alongside the freeway. Main Roads Western Australia monitors traffic volume across the state's road network, including many locations along the Kwinana Freeway.〔 The busiest section is at the northern end, on the Narrows Bridge, which averaged over 93,000 vehicles per weekday in 1979. This increased to over 135,000 in 1988/89, 156,000 in 1998/99, and 160,000 in 2007/08. The volume generally declines as the freeway travels south, with the fewest vehicles recorded near the southern end. There were fewer than 46,000 vehicles per weekday near the Canning Highway terminus in 1978, while in 1998/89 there were under 45,000 north of South Street. For 1998/99 there were fewer than 27,000 vehicles per weekday north of Thomas Road, and during 2007/08 fewer than 38,000 were recorded between Mundijong Road and Safety Bay Road. , the Kwinana Freeway is one of the most congested commuter routes in Perth, during peak traffic periods. The average speed when driving north from Cockburn Central was measured as less than during the morning peak. The slowest section was from South Street to Canning Highway, with an average travel speed of . During the afternoon peak, the worst segment was southbound between Manning Road and Leach Highway, with a average speed. 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「Kwinana Freeway」の詳細全文を読む スポンサード リンク
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