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The Ringerike Line ((ノルウェー語:Ringeriksbanen) or ''Ringeriksbana'') is a proposed extension of the Bergen Line from Hønefoss to Sandvika, Norway. It would reduce travel from Oslo to Bergen by and 50 minutes. Currently trains from the Bergen Line to Oslo must run via Drammen on the Randsfjord Line and the Drammen Line, or via Roa on the Roa–Hønefoss Line and the Gjøvik Line. The project was presented as part of the original proposal of the Bergen Line when approved by Parliament in 1894, but due to the narrow gauge on the Drammen Line at the time, a temporary solution via Roa was chosen instead. Later proposals have been launched, and parliament has voted over it in 1954, 1978, 1984 and 1992; only the last being passed, but not followed up by funding, and the Norwegian National Rail Administration has not allocated any date to start construction; detailed plans have however been produced. ==Route== The line would branch off from the Asker Line just west of Sandvika Station, and continue mostly in tunnel to Hønefoss Station, with an intermediate station at Sundvollen. While only single track, sufficient passing loops every six to eight kilometers, each at , would be built allowing long freight trains. Capacity would be eight trains per hour operating at permitting both freight and passenger trains through 22.5 tonne axle load and maximum 1.2% gradient; electrification would be at the Norwegian standard . In 2002 a route over Åsa was preferred to a route over Kroksund by parliament; despite less passenger potential for local traffic and NOK 700 million more expensive, this would give a smaller environmental impact.〔 Travel time for the quickest trains from Hønefoss to Oslo would be 30 minutes,〔 compared to 60 minutes by bus or 95 minutes by current trains. The Norwegian National Rail Administration has proposed a number of upgrades to the Bergen Line that would allow total travel time between the termini to reduce to four and a half hours. The Ringerike Line is seen as the hallmark of this attempt, that was first launched by the director of NSB in 1954; sixty years later travel time remains at six and a half hours. The project is estimated to cost NOK 7 billion, of which NOK 4 billion would be for the line. Prior to 1989 there were four local trains in each direction from Oslo to Hønefoss;〔 followed by on rush hour service each, but this single service has since been terminated; mainly due to quicker travel times by coaches. The Ringerike Line would allow the Oslo Commuter Rail once again to serve Ringerike; other places served usually have one hourly service, with additional services in rush hour. Reducing travel time from Hønefoss to Oslo to 30 minutes would probably cause larger population growth in Ringerike.〔 〕 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「Ringerike Line」の詳細全文を読む スポンサード リンク
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