So much talk about LIDAR and other sensors. Why nobody talks about obvious idea of Road Object Message Bus? ROMB is a protocol where each road object (a traffic light, a sign, a car, etc.) can transmit info about itself. A car could broadcast its direction vector, intention to turn, any non ROMB moving object it sees. A traffic light could broadcast current state and when it is going to change. That additional inform…
And when something goes wrong with the infrastructure - chaos.
The infrastructure would need to be designed such that large scale outages are unlikely I guess.