Obviously any driverless car is not going to rely on street markings and signage alone. It&#x27;s going to have sensors in all directions and see that a vehicle is headed toward the intersection at a speed which suggests it will not be able to stop in time to avoid a collision. That doesn&#x27;t require some magical machine learning algorithm, and it will probably watch for this better than humans do. We tend to assume everyone else is following the rules and often don&#x27;t notice when someone is about to run the stop sign and hit us.