I'm totally in support for reserving RF spectrum for this and can imagine many scenarios where low-cost, low-power RF transmissions would improve road safety (I

I'm totally in support for reserving RF spectrum for this and can imagine many scenarios where low-cost, low-power RF transmissions would improve road safety (I've just braked really hard; I've just crashed; I'm an emergency vehicle stopped in the road; etc). But yeah, lidar at every intersection is just plain bonkers.