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| color = | logo = | logo_alt = | image = BangkokMetro SiLomStation.jpg | image_width = 300px | image_alt = Silom Station | caption = Si Lom Station | type = Rapid transit | system = MRT | status = Operational | locale = Bangkok, Thailand | start = Hua Lamphong | end = Bang Sue | stations = 18 | routes = 1 | ridership =240,000 | ridership2 =80.6 million | open = July 3, 2004 | close = | owner = Mass Rapid Transit Authority of Thailand | operator = Bangkok Metro Public Company Limited | character =Underground | depot =Huai Khwang Depot | stock =19 three-car trains Siemens Modular Metro | linelength_km =21 | linelength_mi = 13.05 | linelength = | map_state = collapsed | map = | box_width = auto |el = Third rail|top speed = 80 kph|gauge = 1,435 mm standard gauge}} The MRT Chaloem Ratchamongkhon Line ((タイ語:รถไฟฟ้ามหานคร สายเฉลิมรัชมงคล)) or Blue Line is the first and currently only operating line of Bangkok's MRT system. Opened on 3 July 2004, it runs eastward from Bang Sue Station in Chatuchak District along Kamphaeng Phet, Phahon Yothin and Lat Phrao Roads, then turns south following Ratchadaphisek Road, then west following Rama IV Road to Hua Lamphong Station in Pathum Wan District. A much delayed 27 km extension to the Blue line finally began construction in mid 2012 due for completion in April 2019, 2 years later than what it was originally planned. ==History== For the first MRT line, officially known as Chaloem Ratchamongkhon or informally as the "Blue Line", most civil infrastructure were provided by the government sector, Mass Rapid Transit Authority of Thailand (MRTA), and handed over to their concessionaire under a 25-year concession agreement. Bangkok Metro Company Limited (BMCL) is the only private sector company that won a bid in MRTA's concession contract for the blue line. As MRTA's concessionaire, BMCL provides M&E equipment, including electrical trains, signalling systems, SCADA, communication, PSD, etc. for the subway project and fully operates the system. To maintain the system, BMCL has subcontracted in 10 years to Siemens which was the M&E system supplier since system opening and 7 years maintenance contract to two local maintenance services for north and south line. The construction of the first Bangkok Metro line, officially known as Chaloem Ratchamongkhon (Thai สายเฉลิมรัชมงคล) – "Celebration of Royal Auspice" – or informally as the "Blue Line", began on 19 November 1996. The project suffered multiple delays not only because of the 1997 economic crisis, but also due to challenging civil engineering works of constructing massive underground structures deep in the water-logged soil upon which the city is built. The Blue Line was opened for a limited public trial period of several weeks starting on 13 April 2004. On 3 July 2004 the line was officially opened at 19:19 local time by HM King Bhumibol and Queen Sirikit, who were accompanied by other members of the royal family. Within 30 minutes of its opening, sightseers filled the system to its maximum capacity, but after the initial rush ridership has settled down to around 180,000 riders daily — considerably lower than projections of over 400,000, despite fares being slashed in half from 12-38 baht to 10-15 baht per trip. Current ridership (2012) stands at 240,000 on weekdays. 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「MRT Blue Line」の詳細全文を読む スポンサード リンク
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