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The 3S Cable Car (Europe), 3S Gondola Lift or 3S Aerial Tramway (US) is a cable car system that was developed by the Swiss company Roll transport systems in Thun to unite the benefits of a gondola with those of a reversible cable car system. ==Technical description of first systems== The first plant of this type, called ''Alpine express I'', was built in 1991 in Saas Fee. In 1994, a further section - the ''Alpine express II'' - became operational, however, a continuous service of both sections is not possible. The cabs of these plants have space for 30 persons and travel with a speed of 6 m/s pulled by an endless hauling cable, and suspended from two carrying cables. A lane thus consists of three cables (from which the system takes its name). As with most rotating cabin cableways, gondolas are detachable from the cables in order to allow easy disembarkation without disrupting the transit of other cars on the system. The system offers the following advantages over less sophisticated aerial cable-driven transportation systems: * lower energy consumption compared with to-and-from system aerial ropeways of similar capacity * increased wind stability * larger ground distances possible * high driving speed in relation to unity express orbits: Speeds over 7 m/s are possible * high passenger capacity Development and building of the ''Alpine express I'' cost 70 million SFr. Roll built no more 3S cable cars after the two systems in Saas Fee. When Roll was acquired by the Austrian company, Doppelmayr, in 1996, Doppelmayr attained the know-how for 3S cable car construction. The Italian company, Leitner, has also since developed a 3S cable car system. 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「3S Cable Car」の詳細全文を読む スポンサード リンク
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