All New U.S. Cars Must Carry Automatic Brakes by 2029

Starting in 2029, a new federal safety regulation will require all new cars and trucks in the United States to be sold with automatic emergency braking — sensors that hit the brakes to avoid a collision if the driver does not. The new rule, which was made final on Monday, imposes more stringent requirements than the automatic emergency braking technology now sold on most vehicles, and even goes past the point of present technological feasibility, automakers said. The National Highway Traffic Safety Administration set a September 2029 date for compliance,...