Since August 2018, every legal taxi and VTC (vehicle with driver) in Spain has been required to display a blue plate at the rear, distinguishing it from the white plates on ordinary cars. The marker identifies vehicles authorized to carry passengers.
The change began with the taxi sector. Drivers wanted a way to combat unlicensed and pirate vehicles. As ride-hailing apps such as Uber and Cabify grew, the need for a clear distinction became more pressing. Blue plates are now standard for all taxis and VTCs with up to nine seats. A ministerial order amending the Reglamento General de Vehículos introduced the requirement. The BOE (Boletín Oficial del Estado) and the DGT (Dirección General de Tráfico) have not confirmed the precise rules or dates, or the rule's scope. Most details come from commercial blogs or news sites rather than the legal text.
The blue plate is required only at the rear. The front plate stays white with black letters and carries the car's original registration number, so the vehicle's identity does not change. The color lets people see whether a vehicle is licensed to carry passengers without checking its papers at the roadside.
The rollout was staged. Cars registered after August 1, 2018, had to switch immediately, while older taxis and VTCs had a year to update their plates. They could keep working during that period as they changed over. The rule covered all vehicles in the category, whether operated independently or through an app. Official government sources do not directly confirm the transition details or the rule's scope. Anyone seeking certainty should consult the Reglamento General de Vehículos and the ministerial orders in the BOE.
Spain is not the only country using this system. Blue plates also identify licensed passenger vehicles in the Netherlands. Belgium and Greece use them too. Color is quicker to recognize than paperwork, especially in busy cities where police have little time.
For drivers and passengers, the blue plate signals legitimacy: it tells customers their ride is licensed and insured, while giving police a quick way to spot illegal cars. The measure aligns with wider European efforts to modernize urban transport, including the cross-border driverless-car testing reported earlier. The taxi industry pushed for the change as a practical response to new challenges in city transport. It makes legality more visible and reduces the need for roadside paperwork.
