This slot-based intersection design could reduce congestion and pollution

Researchers from around the world have developed a slot-based intersection design that could replace the more traditional traffic light system, and would significantly reduce congestion and pollution.

The system, which would be applied when autonomous technology becomes prevalent, would require sensor-laden cars to effectively 'communicate' on their approach to the junction, moderating their speed and slotting between vehicles travelling in other directions, all the while maintaining a safe distance from one another.