Reallabor (real-world lab)

A Reallabor — German for "real-world laboratory" — is a bounded, temporary setting where a city tests a new technology, service or rule under genuine everyday conditions, often with special regulatory permission and with residents taking part rather than watching from outside.

The point is to learn what actually happens before committing to a full rollout: a real street, real users and real weather surface problems that a lab or spreadsheet never would. Berlin's U-Space Reallabor flies drones carrying medical samples and light goods over a Tempelhof-Schöneberg industrial area; the Netherlands' Brainport Smart District is a 155-hectare living lab where homes are meant to share energy, water and data on a flexible grid; and the small Hessian town of Alsfeld built an open sensor platform for its medieval old town to trial parking, traffic and heat monitoring.

The recurring weakness is what comes after. Labs run on time-limited grants, so promising pilots can stall when the money ends — Brainport itself trimmed its tech ambitions in a 2023 reset — and a result that works in one protected zone does not always scale to a whole city.