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The Trillium Line ((フランス語:Ligne Trillium)) is a diesel light-rail transit (DLRT) service in Ottawa, Ontario, Canada operated by OC Transpo. The line is part of Ottawa's O-Train light rail system. The present line runs north-south on a railway line, from Bayview to Greenboro, a distance of approximately . It is isolated from road traffic, but shared with other trains; after operating hours the track has been infrequently used by Ottawa Central for freight service to the National Research Council. Since its opening on October 15, 2001, the Trillium Line hit the 1-millionth rider mark on May 29, 2002, the 5-millionth mark on January 21, 2005, and the 10-million in late 2010. Until late 2014, the official name of the diesel-powered, north-south line was ''O-Train'' and the line was officially known by that name alone. After construction started on a second, east-west light rail line (the Confederation Line) the O-Train name was used for the entire system and the north-south line was renamed to the Trillium Line. Between 2013 and 2015, there was an upgrading of the line, including the complete replacement of the train fleet, in order to cut wait times during peak periods from 15 minutes to 12 minutes and eventually to 8–10 minutes. The upgrade was also a precursor to extending the line southwards by 3 stations.〔 ==Stations== * Bayview Station provides an interchange with the Transitway and will provide an interchange to the Confederation Line currently under consruction. The station is located on a stub-end track branching off from the railway line, immediately under the Wellington Street and Transitway overpasses. It is currently the closest Trillium Line station to downtown Ottawa. * Gladstone currently has a passing loop added in 2013 in order to increase train frequency and line capacity.〔 It is the site of a proposed O-Train station.〔 * Carling Station is located at Carling Avenue and Preston Street. South of Carling, the train enters a tunnel to pass under Dow's Lake. * Carleton Station serves Carleton University and has separate tracks and platforms for each direction. Until the upgrade of the line in 2013, this station was the location of the only passing loop along the line. South of Carleton, the train crosses over the Rideau River on a bridge. * Confederation Station is located at Heron Road and Bronson Avenue, and primarily serves Government of Canada offices in the Confederation Heights area. * Walkley currently has a passing loop added in 2013 in order to increase train frequency and line capacity.〔 It is the site of a proposed O-Train station.〔 * Greenboro Station provides an interchange with a large Transitway station, which has a large park-and-ride lot and is located next to the South Keys Shopping Centre. The Trillium Line platform is level with the pedestrian overpass crossing the Transitway. ==Pilot project== :''This section and its subsections provide a historical description of the Trillium Line prior the upgrades of 2013-2015.'' In the 1970s and 1980s, Ottawa chose grade-separated busways (the Ottawa Transitway) over light rail on the theory that buses were cheaper. In practice, the capital costs escalated from the original estimate of C$97 million to a final value of C$440 million, a cost overrun of about 450%.〔 〕 This was nearly as high as Calgary's C-Train light rail system, which had a capital cost of C$543 million (in 2005),〔 〕 is about the same length, and carries more passengers.〔 〕 The Ottawa Transitway ultimately reached capacity, with over 175 buses per hour on the downtown section, and had no cost-effective way to increase the volume.〔 〕 The Trillium Line, Ottawa's original ''O-Train'', was introduced in 2001 as a pilot project to provide an alternative to the busways on which Ottawa had long depended exclusively for its high-grade transit service ''(see Ottawa Rapid Transit)''. Until 2015,〔 the system used three diesel-powered Bombardier Transportation Talent BR643 low-floor diesel multiple unit trains. (Currently, the line operates with Alstom Coradia LINT DMU trains.) It is legally considered a mainline railway despite being used for local public transport purposes, and the service it provides is, in terms of its route and service frequency, more like that of an urban railway than a metro or tramway. OC Transpo operates it under the official name ‘Capital Railway’, which appears on the trains along with their regular logo. It was, however, described as ‘light rail’, partly because plans called for it to be extended into Ottawa’s downtown as a tramway-like service, and partly because the Talents, though designed for mainline railways in Europe, are much smaller and lighter than most mainline trains in North America, and do not meet the Association of American Railroads' standards for crash strength. Ottawa is also authorized to run trains with only a single operator and no other crew, something rare on mainline railways in North America. As a pilot project, the Trillium Line system was built at the cost of $21 million, relatively little compared with the hundreds of millions of dollars usually required to build a new transit line. It runs on an existing Canadian Pacific Railway track (Ellwood and Prescott subdivisions,) so the only construction work necessary was to build the stations themselves and the passing tracks necessary to allow trains to operate in both directions. The downside to this, however, is that much ground pollution remains from the track’s previous use. This will become a liability one day when the city has to pay to clean it up, which it has thus far avoided by not digging into the ground under the tracks. The service frequency of a train every fifteen minutes makes it possible to run the line with a fleet of only three trains (of which only two are in service at any given time) and a single track apart from passing sidings at Carleton station. (In 2015, the train frequency was increased after upgrades to the line and replacement of the train fleet, reducing headways to twelve minutes.〔) In mid-2011, the Trillium Line carried an average of approximately 12,000 riders each day.〔 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「Trillium Line」の詳細全文を読む スポンサード リンク
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