Metro de Madrid: Autonomous Floor Scrubbers in One of Europe's Busiest Transit Networks
How Sanad Pro units maintain spotless corridors across Madrid's 300+ station metro system, serving 736 million passenger trips per year.
OCT 15 ' 25Sanad
Metro de Madrid operates one of Europe's busiest transit networks, with over 300 stations and 736 million passenger trips in 2025. The sheer volume of daily foot traffic makes maintaining clean corridors and passageways a constant challenge for traditional manual cleaning methods.
The Solution
Three Sanad Pro units were deployed across station corridors, navigating safely around pedestrian traffic using AI-powered obstacle detection. The robots feature autonomous spot detection to identify and address high-soil areas, and their water recycling system reduces freshwater consumption by 80%.
Results
The deployment delivered consistent, measurable improvements in floor cleanliness across station corridors. Passenger perception of station hygiene improved noticeably, labor and resource costs were reduced, and freshwater consumption dropped by 80% thanks to the onboard recycling system. The deployment represents one of the first autonomous cleaning implementations in Spain's public transit infrastructure.
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