Grand Paris Express represents the largest metro expansion project in Europe, transforming public transportation across the Paris region with four new automated lines, 68 new stations, and over 200 kilometers of new tracks.

A Vision for Greater Paris
This ambitious project aims to connect the entire Paris metropolitan area, including three international airports and ten major business hubs. By 2030, the expansion is expected to increase passenger capacity by 40%, fundamentally reshaping how millions of people travel throughout the region.
Four New Automated Lines
Grand Paris Express includes the construction of four new metro lines:
- Line 15: A 75-kilometer circular line with 36 stations, designed to connect suburbs while bypassing the city center. The southern section is planned to open in April 2027, with full completion around 2030–2031.
- Line 16: Connecting the northern suburbs, with major opening phases expected beyond 2026, with various sections opening closer to the end of the decade.
- Line 17: Serving the northwest region, with major opening phases expected beyond 2026, with various sections opening closer to the end of the decade.
- Line 18: Linking the southern suburbs, with major opening phases expected beyond 2026, with various sections opening closer to the end of the decade.
Advanced Automated System
All new lines will feature fully automated trains, similar to Paris Metro Line 14, ensuring high-frequency service and improved reliability. This modern infrastructure will significantly reduce travel times and increase the overall capacity of the Paris transit network.
Economic and Environmental Impact
Beyond transportation, Grand Paris Express is expected to stimulate economic development across the region, creating thousands of jobs during construction and providing better access to employment centers. The project also supports environmental goals by encouraging public transit use and reducing car dependency.
As construction progresses, Grand Paris Express continues to be one of the most ambitious and transformative public transportation projects in the world, positioning Paris at the forefront of urban mobility innovation.