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Transilien Line V is a railway line serving the southwestern part of Île-de-France. It connects Versailles Chantiers and Massy–Palaiseau. It belongs to the Transilien network operated by SNCF, the French national railway. Unlike the other Transilien lines (with the exception of Line U), Line V lies completely outside the city limits of Paris.
Before December 2023, the line was operated as a branch of RER C. On 4 December 2023, the line was separated from the RER C and became a shuttle line, in preparation for the opening of the T12 Express tramway line on 10 December 2023. The line is officially designated line V on 15 December 2024.[2]
History
The tracks that Transilien Line V operates over were built as part of the Grande Ceinture line. Construction of the line began after August 1875 when it was declared of public utility. The section that the Line V operates over opened as part of the section from railway line between Juvisy and Versailles Chantiers on 1 May 1883.
A large part of the Grande Ceinture line was closed to passenger traffic in 1939 with the exception of the southernmost section of the future line V, between Versailles Chantiers and Juvisy via Massy–Palaiseau. However, the majority of trains over the line were freight trains.
This section of the line was electrified on 6 February 1947. Additional passenger traffic would come to the line over the following decades until the line was integrated into the RER C line of the Réseau Express Régional in 1992.
In 2004 and again in 2008, studies were conducted into adding more frequent service on the line, first proposing it become a dedicated RER line, then later recommending it become a tram-train line. However, the section between Versailles Chantiers and Massy–Palaiseau chosen for conversion, instead focusing on the section between Massy–Palaiseau and Épinay-sur-Orge.
On June 7, 2023, the president of Île-de-France Mobilités, Valérie Pécresse announced that the section of between Versailles Chantiers and Massy–Palaiseau would be disconnected from the RER C network to be operated as separate shuttle line. The disconnection took place on 10 December 2023, the same day the T12 Express tramway line started operating between Massy–Palaiseau and Épinay-sur-Orge.
The Line V name is being progressively rolled out on signs and websites, with the full change occurring on 8 December 2024.[2]
^"Map for journeys by wheelchair users"(PDF). Île-de-France Mobilités (in French and British English). Paris: Région Île-de-France. 11 May 2023. Archived from the original(PDF) on 13 July 2023. Retrieved 13 July 2023.
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