You bring up a valid point. In highly congested areas the traffic does not simply follow the traffic code. It's more of a distributed system of traffic routin

You bring up a valid point. In highly congested areas the traffic does not simply follow the traffic code. It's more of a distributed system of traffic routing whereby drivers/riders let each other know that they will be letting the other one pass or would like to go ahead first. And bicyclists and mopeds signal their turns with their hands. Can a self driving car recognize my slight nod or my hand gesture indicating to it that I ain't stopping?