Modernisation of Madrid's circular Line 6 to enable fully automated driverless operation. Key upgrades include platform screen doors and advanced signalling systems. ACS Group · Acciona · News
Madrid Metro Line 6 Driverless Conversion (Circular) is a metro project in Spain, currently under construction.
Brownfield upgrade: converting existing Madrid Metro Line 6 (Circular) to fully driverless (GoA4) operation. No new tunnel construction — signalling and platform door upgrade.
Construction began in 2025, with completion expected in 2027.
The project has an estimated investment of €129M.