In the Greater Paris area, known as Île-de-France, various changes and improvements to the extensive transport network are planned for the end of the year. A total of €4 billion in investment is planned for 2025, benefiting around 12 million people in France’s largest metropolitan area.
This investment will be spread across the various modes of transport. Here are some of the most important measures planned for the coming months:
RER suburban railway:
From the end of September, long trains will run on the A lines during off-peak hours in the evenings and at weekends – increasing demand has made this necessary for some time.
The new generation of RER trains is scheduled to enter service on the RER D line between Villeneuve Saint-Georges and Melun in December.
Metro:
The first of 30 Alstom new-generation metros (MF 19) is expected to enter service on line 10 in the autumn, offering passengers numerous amenities. On 26 September, the first MF19 train with the final Île-de-France Mobilités livery will be unveiled at the La Villette workshops.
The modernisation of the signalling system on metro line 6 to increase capacity and improve operations is scheduled for completion in October. The modernisation of the signalling system on metro line 9 is also expected to improve capacity and regularity on the line.
Tram and tram-train
In October 2025, the last of the 37 new Alstom Citadis X05 trams ordered is scheduled to arrive on the T1 line. All of the old TFS-2 trams, which began operating on Paris’ first modern tram line in 1992, will thus be replaced by new vehicles.
In December, the operation of the two tram-train lines T12 and T13 will be transferred to RATP CAP Île-de-France. Until now, they have been operated by the Transkeo T12-T13 consortium, a joint venture between Keolis (51%) and SNCF Voyageurs (49%). Both lines have been in operation since 2022 and are served by Alstom Citadis Dualis low-floor trains.
Cable car as a new means of transport
In December, the Cable C1 ropeway/cableway, built by the Doppelmayr Group, will start passenger service. It is the first cable car in Île-de-France and will connect Créteil Pointe du Lac (terminus of line 8) with Villeneuve-Saint-Georges. Scheduled trial operations without passengers will begin two months earlier: all cabins will be tested under real conditions – frequency, timetables, flights, stops – and equipped with artificial ballast corresponding to the weight of passengers in the cabins.
Bus
The 56 double-articulated electric buses ordered for the TZEN 4 line to Bus Rapid Transit (BRT) standard, 24 metres long and inductively rechargeable in 5 minutes via charging stations in the ground, are all due to arrive in Paris by November 2025. Following the bankruptcy of the manufacturer Van Hool, the vehicles will be completed by the Swiss manufacturer HESS in the former Van Hool plant in Lier/Belgium and delivered to Île-de-France Mobilités.
The vehicles are scheduled to begin trial runs in December on the TZEN 4 line between Viry-Châtillon and Corbeil-Essonnes.
There are also numerous changes to the bus route network. By the end of the year, the use of diesel fuel in buses is also to be phased out. Non-electric buses will in future be fuelled with HOV, a fuel derived from vegetable oil.
Finally, the sale of paper tickets will also end in November 2025, with all tickets to be issued electronically in future.
Updated:
04.11.2025
