> following verbal or gestured instructions from a police officer or construction worker. If they don't broadcast it with a valid signature, just ignore them,

> following verbal or gestured instructions from a police officer or construction worker. If they don't broadcast it with a valid signature, just ignore them, they're not authorized to give any instructions. > turn the road system into a closed system You can turn it into a "closed enough" system, with every vehicle having a radio locator, and everything else being treated as an unknown obstacle... that someone could get fined for putting it on the road.