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 02-31/03:
Period: Weeknights starting at 8:30 PM.
Dates: From Monday, March 2 to Tuesday, March 31.
Service between La Défense and La Verrière is suspended. The last train from La Défense to La Verrière departs at 9:15 PM (VERI). The last train from La Verrière to La Défense leaves at 8:20 PM (DEFI).
A replacement bus service will operate, serving intermediate stations.
Reason: Railway infrastructure maintenance work. - Line U: La Défense <-> La Verrière 01-03/04:
Timeframe: In the evening
Dates: From Wednesday, April 1 to Friday, April 3
Train services will be suspended between La Défense and La Verrière. The last train from La Verrière to La Défense (DEFI) departs at 8:20 PM.
The last train from La Défense to La Verrière (VERI) leaves at 9:15 PM. A replacement bus service will be operational, serving intermediate stations along the route.
Reason: Railway network maintenance work. - Line U: La Défense to La Verrière on the evening of Monday, April 6:
Period: in the evening
Dates: Monday, April 6
Traffic will be interrupted between La Défense and La Verrière.
Last train from La Défense to La Verrière: VERI at 9:15 PM.
Last train from La Verrière to La Défense: DEFI at 8:20 PM.
A replacement bus service will be available, stopping at intermediate stations. - Line U: La Défense <-> La Verrière 07-24/04:
Period: Weekdays. Dates: from Tuesday, April 7th to Friday, April 24th.
Train service between La Défense and La Verrière is suspended. The last train from La Verrière to La Défense DEFI departs at 8:20 PM.
The final train from La Défense to La Verrière VERI departs at 9:15 PM. Replacement bus services are available, stopping at intermediate stations.
Reason: Railway maintenance work. - Line U: La Défense <-> La Verrière 07-24/04:
Period: Weekdays. Dates: Tuesday, April 7 to Friday, April 24.
Train services between La Défense and La Verrière are suspended. The last train from La Verrière to La Défense is the DEFI at 8:20 PM.
The final train from La Défense to La Verrière is the VERI at 9:15 PM. A replacement bus service is available, stopping at intermediate stations.
Reason: Railway maintenance work. - Line U: La Défense <-> La Verrière 07-24/04:
Period: Weekdays. Dates: from Tuesday, April 7th to Friday, April 24th.
Train services between La Défense and La Verrière are suspended. The last train from La Verrière to La Défense DEFI departs at 8:20 PM.
The final train from La Défense to La Verrière VERI leaves at 9:15 PM. A replacement bus service is available, serving all intermediate stations.
Reason: Network maintenance work.
This page may contain AI-assisted elements, more information here.
