V2X (Vehicle-to-Everything) lets traffic lights broadcast “I’ll turn red in 4s” and hidden cars shout “I’m behind the truck!” — giving AVs superhuman horizon.
Smart Intersection 2030
In Ann Arbor, 75 intersections already broadcast SPaT messages over 5G. AVs cut stops by 30% and crashes by 40% by knowing the light before seeing it. China mandates V2X in all new highways by 2027.
Why AVs Still Must Drive Without It
V2X is redundancy, not dependency — the car must handle total blackout. But where deployed, it’s like giving every driver X-ray vision.