Should we expect any disruption on Line U of the Transilien network in the Paris region? Between demonstrations, strikes, incidents, roadworks, station closures and other factors, we take a look at the traffic situation in real time.
Created in 1995 as a tangential link between La Défense and La Verrière, and officially renamed line U at the end of 2004, this suburban line of the Transilien network is a strategic link in the western Paris region. It is approximately 31 kilometers long.
The line serves around ten stops and follows a single route linking two major hubs without passing through a conventional Paris station. These include La Défense, Puteaux, Suresnes-Mont-Valérien, Saint-Cloud, Sèvres-Ville-d'Avray, Chaville-Rive-Droite, Versailles-Chantiers, Saint-Cyr, Saint-Quentin-en-Yvelines, Trappes and La Verrière.
The line runs exclusively through the Île-de-France region, and is entirely under the jurisdiction ofÎle-de-France Mobilités, whose route is based on older rail infrastructure. Firstly, it uses a section of the infrastructure between La Défense and the Viroflay junction, from the Paris-Saint-Lazare to Versailles-Rive-Droite line, opened in 1839, then the link between Viroflay and La Verrière, opened in 1849 as part of the Paris-Montparnasse-Brest line.
Real-time traffic conditions on line U of the transilien network:
- Line U: La Défense <-> La Verrière 01-23/10 during weekday evenings:
Period: Weeknights in the evening.
Dates: from Thursday, October 1 to Friday, October 23.
Traffic is suspended between La Défense and La Verrière. Last train from La Défense to La Verrière: the VERI at 9:15 p.m. Last train from La Verrière to La Défense: the DEFI at 8:20 p.m. A replacement bus service is in operation, serving the intermediate stations.
Reason: works on the railway network. - Line U: La Défense <-> La Verrière, weekends, Oct 3–18:
Period: Saturday all day and Sunday until 3:45 p.m.
Dates: weekends from Saturday the 3rd to Sunday the 4th, Saturday the 10th to Sunday the 11th, and Saturday the 17th to Sunday the 18th of October.
The U line is extended between La Verrière and Rambouillet.
Reason: railway works. - Line U: La Verrière <-> La Défense, 05/10–28/12, 1:30 PM to 2:30 PM:
Period: from 1:30 p.m. to 2:30 p.m.
Dates: Mondays October 5, November 2 and 30, and December 28.
Due to maintenance work, certain trains on Line U will, in exceptional cases, terminate at Saint-Cloud or originate there.
Reason: works on the rail network. - Line U: La Défense <-> La Verrière on 24/10, during the day. :
Period: until 3:30 p.m.
Dates: Saturday, October 24.
The U line is extended between La Verrière and Rambouillet.
Reason: railway works. - Line U: La Défense <-> La Verrière 26–30/10:
Period : Weekdays, in the evening.
Dates : from Monday, October 26 to Friday, October 30.
Traffic is suspended between La Défense and La Verrière. Last train from La Défense to La Verrière: the VERI at 19:59. The 20:14, 20:29, 20:45 and 21:15 departures from La Défense will terminate at Trappes; city buses are reinforced between Trappes and La Verrière. Last train from La Verrière to La Défense: the DEFI at 20:20. A replacement bus service is in place, serving the intermediate stations.
Reason : works on the railway network. - Line U: La Défense <-> La Verrière 02/11–04/12 on weekday evenings:
Period: on weekdays, in the evenings.
Dates: from Monday, October 2 to Friday, December 4.
Rail traffic is suspended between La Défense and La Verrière.
Last train from La Défense to La Verrière: the VERI at 21:15.
Last train from La Verrière to La Défense: the DEFI at 20:20.
A replacement bus service is in place, serving the intermediate stations.
Reason: railway works.
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