A visual dialogue between autonomous cars
A smart lighting system for self-driving cars is being developed by Opel, where LED headlights turn into active and interactive signals. The project introduces a “visual dialogue” between SAE Level 3 vehicles, where drivers can keep their hands and eyes off the wheel, designed to boost safety in complex traffic situations.
Opel unveils an innovative prototype
Presented at the International Symposium on Automotive Lighting in Darmstadt, the prototype is based on the Opel Grandland and designed for real-world scenarios. These include a child suddenly chasing a ball across the street or a pedestrian stepping out from between parked cars: situations that challenge even experienced drivers.
In such cases, onboard cameras detect the hazard and the AI system interprets the intentions. The vehicle immediately sends a visual signal: the light signature shifts from cyan, which indicates active autonomous driving, to magenta, combined with a warning on the front display.
At the same time, the car slows down and comes to a full stop. Only then do the lights turn green, displaying a pedestrian icon to confirm safe crossing. If the algorithm cannot manage the situation, the system asks the driver to take back control, in line with ADAS protocols.
AI and smart headlights enhance road safety
The project integrates sensors and predictive algorithms able to recognize gestures and movements, adjusting the lighting signals accordingly. Color choice was deliberate: red and amber remain tied to traditional functions, while cyan and magenta, not used in traffic contexts, ensure a clear visual language.
“Headlights clearly play a key role in improving road safety, but modern lighting systems can do much more. The illuminated Blitz on Opel Grandland can be replaced with a display that shows the emblem or visual messages to communicate with pedestrians and other road users,” explained Philipp Röckl, Global Lead Lighting at Stellantis.
Smart lighting in Opel vehicles
This experiment builds on Opel’s track record of advanced lighting systems already on the road: Intelli-LED (Corsa and Mokka), Intelli-Lux Matrix (Corsa, Mokka, Combo), Intelli-Lux Pixel Light (Astra and Astra Sports Tourer), and Intelli-Lux HD Light, now debuting on the new Grandland.
Partnership with university and Stellantis
Since 2022, Opel, Stellantis, and the Technical University of Darmstadt have been working together on joint lighting research projects. Within the so-called OpenLabs, they develop solutions for future vehicles. The Grandland prototype is one of the tangible outcomes of this partnership, aiming to create a new generation of visual communication systems for autonomous driving.