https://apnews.com/60271de0b74c5d06d28c7c7d0dfbc28e > DETROIT (AP) — The trade association representing most major automakers is offering guidelines for manufacturers to advertise partially automated driving systems and to make sure drivers are paying attention while using them. > The Alliance for Automotive Innovation says its members support the voluntary principles, which come as two federal agencies increase scrutiny of Tesla's Autopilot diver-assist system after two men were killed in a fiery crash near Houston. Such systems can keep vehicles centered in their lane and a safe distance behind traffic in front of them.