I don&#x27;t think it&#x27;s the traffic law that is complex, but the liability involved. If my car picks its own speed and gets the speed limit wrong, who is responsible?<p>You could say that the ultimate responsiblity lies with the driver, but taking this position effectively means that all self-driving features are pointless (since this implies that the driver should be concentrating on the driving at all times).<p>If the responsibility lies (partially, at least) with the car manufacturer, they are going to get a lot of lawsuits thrown at them when it gets the speed limit wrong. Every speeding ticket, every accident where the car was going too fast, etc.