Europe plans white traffic light for autonomous vehicle coordination

Europe is considering the introduction of traffic lights with a fourth signal: white. The project is already being studied in Rome and is based on research from North Carolina State University focused on the interaction between autonomous vehicles and infrastructure.

The white signal would activate when an intersection switches to a "smart" mode. During this time, connected vehicles will begin exchanging data with each other and with the road system, automatically coordinating traffic flow. For drivers, it will be sufficient to follow the flow of traffic.

This technology is expected to reduce waiting times at intersections and increase road capacity. It also holds potential for lowering emissions through smoother movement without unnecessary stops. Safety receives particular attention. The system should provide advance warning of obstacles and reduce the impact of human error, which remains the primary cause of traffic accidents.

However, implementing this new technology comes with several challenges. These include ensuring cybersecurity and facilitating the cooperative operation of traditional vehicles alongside self-driving cars.

Experts note that such solutions are especially relevant given the development of new vehicles for 2026, where autonomous driving technologies are becoming a key focus.