Grand Paris Express

The Grand Paris Express is a project consisting of new rapid transit lines and the extension of existing lines being built in the Île-de-France region of France. The project comprises four new lines for the Paris Métro, plus extensions of the existing Lines 11 and 14. A total of 200 km of new tracks and 68 new stations are to be added, serving a projected 2 million passengers a day.

The constructed lines are planned to open in stages, starting with the Line 14 extension in June 2024, until 2030.

Since August 2013, the New Grand Paris steering committee has met quarterly. The first public inquiry, focused on the southern section of Line 15 from to Noisy–Champs, was held from October to mid-November 2013. Work on Line 15 began in 2015. Its first section between Métro station and Noisy–Champs RER A station was scheduled at that time to open around 2020, but this has now been pushed back to 2025. This line was first proposed in the Orbival project, then integrated into the Arc Express.

Line 11 extension
To ensure better commuter service to the inner northeastern suburbs, a six-station, 5.4 km eastern extension of Line 11, not considered part of the Grand Paris Express project, opened from Mairie des Lilas to Rosny-sous-Bois. The scheme was initially lobbied for by the local authorities of these suburbs, and was adopted during the 2007 review of the Île-de-France Transportation Plan. Work on the extension to Rosny – Bois-Perrier started in 2015 and opened on 13 June 2024. It provides connections with the RER E and an eventual extension of Île-de-France tramway Line 1, which better links central Paris with the commuter hub of Châtelet–Les Halles.

Revisions in the Grand Paris Express Plan and possible automation
A revised plan for the proposed Grand Paris Express subway system was unveiled on 6 March 2013, and calls for a second extension of Line 11 to be built towards Noisy–Champs, this second extension being considered part of the Grand Paris Express project. The target opening date is 2030, but might be pushed back. Should the second extension be built, Line 11 will eventually be fully automated. Automatic train operation was not implemented with the Rosny extension, although the RATP and STIF had considered the possibility of adding it later on.

Rolling stock


Being the first metro line to be converted to rubber-tyred pneumatic operation, the first set of rubber-tyred rolling stock to be in service on Line 11 was the MP 55, which operated from October 1956 through January 1999. They were then replaced by refurbished MP 59 stock from Line 4. The MP 55 stock consisted of 4 carriages, as well as the current MP 59 stock. One MP 73 of line 6 is in service on the 11 as well.

The plan, according to Île-de-France Mobilités, was to replace the fleet of Line 11 with the MP 14 series, around the time when the extension to Rosny-sous-Bois opened. Although the new trains will be driver-operated in the same method as the current fleet, they will be 5 cars long, and have open gangways.

An initial 20 trains were ordered in February 2018 with an additional 19 trains ordered in July 2021. Production began in late 2020, with testing in summer 2021.

In June 2023, new MP 14 CC (manual transit) were deployed with four new trains entering in service each Tuesdays in exchange of four MP 59 transferred to Rosny-sous-Bois workshop on Mondays-sunset to be retired. Twenty new MP 14-manual transit will be deployed until summer 2023, with nineteen new trains needed to be deployed in spring 2024 due to the extension to Rosny–Bois-Perrier.

The ceremonial final runs of the MP 59 took place on 23 May 2024, with #'s 6069, 6073 and 6087 being the final three to be withdrawn.

Northern extension of Line 14
The automated Line 14 was extended north from to Mairie de Saint-Ouen, with the primary aim of reducing overcrowding on Line 13. The adopted solution connects both branches of Line 13 to Line 14, with stations at on the Asnières – Gennevilliers branch and  on the Saint-Denis branch. An additional station connects with the RER C station, and another with the Transilien Paris-Saint-Lazare lines at Pont Cardinet, and the final one with the RER D at Saint-Denis–Pleyel. Construction on the extension began in 2014, with an aim of completion by 2019. Completion was later pushed back to 2020 after flooding from the water table stopped the tunnel works for a year. The COVID-19 pandemic then further delayed the opening to December 2020. The extension opened on 24 June 2024, just before the 2024 Summer Olympics.

Southern extension of Line 14
Line 14 was also being extended south from Olympiades towards Orly Airport. The extension travels southeastward from Olympiades to, interchanging with Line 7's Villejuif branch, which opened on June 24, 2024 (promptly before the Olympic Games).

With both extensions complete, it is expected that Line 14 will eventually be merged into the proposed Grand Paris Express system.

Rolling stock
In February 2012 the STIF announced that with the two extensions planned, the brand new MP 14 class of rolling stock will replace the MP89 CA and MP 05 stock on Line 14 starting from 2020. This new stock would be in eight-car train formations, something not yet employed on the Paris Métro but allowed by the length of all Line 14 stations. The current MP 89 CA and MP 05 stock would then be reassigned to line 4, alongside some 6-car MP 14s. They will replace the manually driven MP 89 CC rolling stock, which will be refurbished before going to line 6 to replace the aging MP 73 rolling stock.

Line 15
Line 15 will be a high-capacity underground rail line, providing a new ring line around Paris in the departments of Hauts-de-Seine, Val-de-Marne and Seine-Saint-Denis. It will enable direct journeys between the suburbs, bypassing central Paris. The configuration of the line is very similar to that of the Arc Express, proposed by the RATP in 2006. It was later included in the red line project of the Grand Paris public transportation network, introduced by French President Nicolas Sarkozy in 2009. In March 2013, the "New Grand Paris" project was announced by the Prime Minister at the time, Jean-Marc Ayrault. At this time, the line acquired its current line 15 naming.

Line 15 is planned to open in phases from 2025 through 2030. It will create a loop connecting Noisy–Champs to Champigny, passing through Champigny-sur-Marne, Créteil, Villejuif, La Défense, Saint-Denis and Rosny-sous-Bois.

Proposed timeline
On 22 February 2018, a new timeline is announced by Prime minister Édouard Philippe:


 * During 2014: Public inquiry on the eastern section from Saint-Denis–Pleyel to Champigny Centre.
 * Early 2015: Groundbreaking of the southern section spanning Pont-de-Sèvres to Noisy–Champs.
 * 2024, postponed to 2025 in September 2018: Southern section from Pont de Sèvres to Noisy–Champs put into service.
 * 2030: western section from Pont de Sèvres to Saint-Denis–Pleyel and eastern section from Saint-Denis–Pleyel to Champigny Centre put into service.

Previous timeline
In 2013, the government led by Ayrault proposed this timeline for the line 15 project:
 * 2014: Public inquiry on the eastern section from Saint-Denis–Pleyel to Champigny Centre.
 * Early-2015: Groundbreaking for the southern section between Pont-de-Sèvres and Noisy–Champs.
 * 2020: Groundbreaking of the section from Pont-de-Sèvres to Nanterre and from Saint-Denis–Pleyel to Rosny-Bois-Perrier on the northern section.
 * 2022: Southern section from Pont-de-Sèvres to Noisy–Champs opens.
 * Early 2025: Segments from Pont-de-Sèvres to Nanterre and from Saint-Denis–Pleyel to Rosny-Bois-Perrier of the northern section put into service.
 * 2025: Groundbreaking of the segment from Nanterre to Saint-Denis–Pleyel via La Défense-Grande-Arche of the northern section.
 * Early 2030: Segment from Nanterre to Saint-Denis–Pleyel via La Défense-Grande-Arche of the northern section put into service.
 * End of 2030: Northern section from Rosny to Champigny completed.

Rolling stock
The proposed rolling stock for line 15 is a new automated design, using conventional steel wheel on steel rail technology and overhead electrification, with a width of 2.80 m. Alstom has been chosen to build these trains. The names of the trains are the Alstom Metropolis MR3V/MR6V (MR6V (6-car variant for line 15) and MR3V (3-car variant for lines 16 and 17)).

The specifications of the trains travelling line 15 and their operation are as follows:
 * Train width: 2.80 m minimum
 * Train length: 108 m, made up of 6 cars with full-open interior gangways
 * Train capacity: 960 passengers (at 4 passengers per m²)
 * Bearings: iron
 * Electric traction current: 1500 volt direct current via pantograph and contact wires
 * Operation: Fully automated
 * Maximum speed: 120 km/h
 * Average operating speed: 55 km/h
 * Theoretical morning rush hour throughput: 34 560 passengers per hour
 * Average interval: 3 to 4 minutes
 * Minimum interval: 2 minutes

Lines 16 and 17
Line 16 is planned to open in between 2026 and 2028.

Line 17 is planned to open in phases between 2026 and 2030.

Rolling stock
The proposed rolling stock for lines 16 and 17 is a new automated design with a width of 2.80 m, using conventional steel wheel on steel rail technology and overhead electrification. The rolling stocks for the line is the Alstom Metropolis MR3V (3-car variant)

Line 18
Line 18 is planned to open in phases between 2026 and 2030.

Rolling stock
The proposed rolling stock for line 18 is the MRV (Matériel Roulant Voyageurs), a new automated design with a width of 2.45 m, using conventional steel wheel on steel rail technology and third rail electrification. Alstom has been chosen to build these trains.