The issue at hand is the “rolling stop” feature within Tesla’s Full Self-Driving package. That package comes with three different driving modes that the user can choose from when they activate it — chill, average and assertive. When in the assertive mode, the vehicle will perform rolling stops (which is when the car doesn’t come to a full and complete stop at a stop sign) that the National Highway Traffic Safety Administration (NHTSA) has found could be dangerous.
According to the NHTSA, Teslas with rolling stop activated can “travel through all-way-stop intersections at up to 5.6 mph before coming to a complete stop” depending on the surroundings and circumstances. NHTSA stated in a safety recall notice that the consequence was that “failing to stop at a stop sign can increase the risk of a crash.”