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The Shenfield to Southend Line is a branch line off the Great Eastern Main Line in Essex, in the east of England. It links in the west to , in Southend-on-Sea, in the east. The vast majority of services connect to or from the Great Eastern Main Line and its London terminus at Liverpool Street. The line is part of the Network Rail Strategic Route 7, SRS 07.05, and is classified as a London and South East commuter line.〔 (【引用サイトリンク】title=Route 7 - Great Eastern )〕 Passenger services on the line are currently operated by Abellio Greater Anglia. ==History== The line, as well as the Crouch Valley Line which branches off it at , was opened in 1888-89 and represented the largest railway building project undertaken by the Great Eastern Railway (GER) in Essex. The 15 stations of these "New Essex" lines were the epitome of the "Domestic Revival" style pioneered on the GER by their architect, W. N. Ashbee, which came to be known as the ''New Essex'' or ''Ashbee'' style. The stations on the Shenfield to Southend Line are largely in their original form, including canopies.〔(Trimley Station Community Trust: History ), accessed 31 August 2015〕 The line has been electrified at different times throughout its history using three different systems, all of which use overhead lines to carry the electric current. The first system used was 1500 V d.c., commissioned in 1956,〔"Railway Magazine" February 1957〕 following the commissioning of the main line from London to Shenfield in 1949. This was to replace an intensive steam service. In the 1960s the line was converted to 6.25 kV, 50 Hz as part of the decision by the British Transport Commission to adopt 25 kV 50 Hz electrification as the standard system rather than 1500 V d.c. electrification. The line did not immediately use 25 kV due to problems with clearances under bridges. In 1979, it was converted for a second time to 25 kV following more research into the permissible clearances to structures. 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「Shenfield to Southend Line」の詳細全文を読む スポンサード リンク
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