Grand Paris Express

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. The target opening date is 2030, but might be pushed back. Should the second extension be built, Line 11 will eventually be fully automated.[6] Automatic train operation is not currently planned for the Rosny extension, although the RATP and STIF had considered the possibility of adding it later on.

As of March 2013, it was expected that additional MP 14 stock will be used for line 11.

The automated Line 14 is being extended north from Saint-Lazare, with the primary aim of reducing overcrowding on line 13.[7] The adopted solution connects both branches of line 13 to line 14, with stations at Porte de Clichy on the Asnières – Gennevilliers branch and Mairie de Saint-Ouen on the Saint-Denis branch. An additional station will connect with the Saint-Ouen RER C station, and another with the Transilien Paris – Saint-Lazare lines at Pont-Cardinet, and the final one with the RER D at Stade de France – Saint-Denis. Construction on the extension began in 2014, with an aim of completion by 2019.[8] Completion was later delayed to late-2020 after flooding from the water table stopped the tunnel works for a year .

Line 14 is also being extended south towards Orly Airport. The extension will travel southeastward from Olympiades to Maison Blanche, with a possible connection to Line 7's Villejuif branch, with a planned opening in 2024.

When both extensions are complete, it is expected that Line 14 will eventually be merged into the proposed Grand Paris Express system.[9]

1/10 scale model of the new m2 metro in Lausanne, of the same type as for line 14

In February 2012 the STIF announced that with the two extensions planned, the brand new MP 14 class of rolling stock will replace the current MP 89CA (and upcoming MP 05) stock on Line 14 in about 2020. This new stock would be in eight-car train formations, something not yet employed on the Métro but allowed by the length of all Line 14 stations, and the MP 89CA and MP 05 stock would be reassigned to other lines.[10]

In 2013, the government led by Ayrault proposed this timeline for the line 15 project:[16][17]

• 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.

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 metres (9 ft 2 in).

The specifications of the trains travelling line 15 and their operation are as follows:[18][19]

• Train width: 2.80 metres (9 ft 2 in) minimum
• Train length: 108 metres (354 ft), 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[20]
• Operation: Fully automated
• Maximum speed: 120 kilometres per hour (75 mph)[21]
• Operating speed: 55 kilometres per hour (34 mph)[21]
• Theoretical morning rush hour throughput: 34 560 passengers per hour[22]
• Average interval: 3 to 4 minutes[21]
• Minimum interval: 2 minutes[21]

The proposed rolling stock for lines 16 and 17 is a new automated design with a width of 2.80 metres (9 ft 2 in), using conventional steel wheel on steel rail technology and overhead electrification.

The proposed rolling stock for line 18 is a new automated design with a width of 2.45 metres (8 ft 0 in), using conventional steel wheel on steel rail technology and third rail electrification.