U.S. to require automatic emergency braking on new vehicles in 5 years

DETROIT — In the not-too-distant future, automatic emergency braking will have to come standard on all new passenger vehicles in the United States, a requirement that the government says will save hundreds of lives and prevent thousands of injuries every year.

The National Highway Traffic Safety Administration unveiled the final version of the new regulation on Monday and called it the most significant safety rule in the past two decades. It's designed to prevent many rear-end and pedestrian collisions and reduce the