People use their eyes and ears to pick up on traffic situations involving potential hazards. For self-driving vehicles to do the same thing, they need a whole host of sensors. As the number of sensors they contain increases, however, so too does the amount of space required to fit them in – something that is often incompatible with the vision of designers. Now, researchers at the Fraunhofer-Gesellschaft have discovered a method of integrating certain sensors discreetly. Their solution lies in the vehicle’s headlights, where they are combining optical light, radar and LiDAR.