Madrid Metro Line 6 to close in phases for driverless upgrade

Line 6 to be automated in 2025 with phased works and two-minute train frequency

Metro de Madrid’s most ambitious project for the coming years isn’t about adding kilometers, but removing the driver. Line 6, the circular route surrounding the capital used by an average of 400,000 daily passengers, will become the first line on the network to operate with automated trains. The comprehensive overhaul begins in 2025 and will require service suspensions for months across two distinct sections, with an alternative transport plan yet to be defined.

The Regional Ministry of Transport has already taken the first step by launching the tender process for works valued at €129 million. The stated goal is to reduce track incidents, shorten travel times, and optimize maintenance. The planned schedule allocates work between June and September for the southwest arc, from Moncloa to Méndez Álvaro, and from September to December for the northeast section, between Moncloa and Legazpi.

What actually changes on Line 6

When discussing a comprehensive remodel, the list of actions is extensive. The ballast—the stones supporting the track—and wooden sleepers are being replaced with a concrete slab antiestéticaturing state-of-the-art supports. The rails are renewed with electric welding, rigid catenary is installed in the Ciudad Universitaria depots, and a noise and vibration attenuation system is implemented.

The most visible element for travelers will be the automatic platform screen doors, the transparent barriers separating the public from the tracks, which already function in other networks with automatic driving. Additionally, signaling systems will be completely updated to adapt to cab-less piloting. The promised frequency: one train every two minutes.

Official argument: greater reliability and shorter waits

The Regional Ministry claims that automation increases regularity up to fivefold, saves energy by homogenizing acceleration and braking, responds better to demand peaks, and reduces waiting time on platforms. Investment in the new fleet amounts to approximately €1 billion, already awarded, and will retire the oldest models on the network’s busiest line.

Regarding employment, the institutional message is firm: automation will not destroy driver jobs, as these positions will be reassigned to reinforce other lines. This promise sustains the official narrative as the calendar pogre.

Pioneers, but not quite: twenty years late

This is where the narrative cracks. Barcelona’s Line 9 has operated automatically for over fifteen years, and Catalonia’s L11 has been driverless since 2003. In Singapore and Dubai, metros have been without drivers since before 2019, and the Barajas airport terminal connector train has always been automatic. The pioneer label fits Madrid poorly: it joins the club two decades behind.

The other side of the coin is safety. On a network without drivers, the first response to an incident comes from the system or station staff. Some recall that when a passenger activated the emergency handle in a stopped carriage, the driver deactivated it to resume movement. Without anyone in the cab, this management depends on remote relays and someone on the platform knowing what to do. This is not a minor technical issue, but an operational design problem.

Platform screen doors and the unresolved debate

Transparent barriers have an undisputed secondary effect: they prevent falls onto the tracks. In a network where station incidents are a silent constant, this physical shielding is the project’s strongest argument. The uncomfortable part is the schedule: two closures splitting the circular line in half force hundreds of thousands of people to reorganize their mobility for six months. A free replacement service is announced, but its specific form will be decided via surveys conducted on the platform.

Line 6 connects with practically all other lines. Closing it in sections is not a local inconvenience, but a network-wide problem. How many travelers are willing to change habits for six months so that in two years the train arrives alone?