NHTSA has opened an investigation into VinFast’s first U.S. electric vehicle model less than a month after four family members were killed in a one-car accident in the California Bay Area.

Companies offering driver-assistance systems and developing autonomous vehicles are entering a new phase of more exacting oversight.

DETROIT — The U.S. government’s highway safety agency has opened another investigation of automated driving systems, this time into crashes involving Waymo’s self-driving vehicles.

NHTSA has opened an investigation into Zoox, the autonomous vehicle subsidiary of Amazon.com Inc., after two incidents in which its SUVs suddenly braked and were rear-ended.

DETROIT — Federal highway safety officials want Tesla to tell them how and why it developed the fix in a recall of more than 2 million vehicles equipped with the company’s Autopilot system.

DETROIT — In the not-too-distant future, automatic emergency braking will have to come standard on all new passenger vehicles in the United States.

DETROIT — Two fatal crashes involving Ford’s Blue Cruise partially automated driving system have drawn the attention of U.S. auto safety regulators.

DETROIT— The U.S. government’s auto safety agency is investigating whether last year’s recall of Tesla’s Autopilot driving system did enough to make sure drivers pay attention to the road.

Tesla Inc. recalled 3,878 Cybertruck pickups to rework or replace accelerator pedals that can dislodge and cause the vehicle to unintentionally accelerate, increasing risk of a crash.

DETROIT — NHTSA has opened an investigation into a Ford recall for gas leaks from cracked fuel injectors that can cause engine fires, saying in documents that the remedy doesn’t fix the leaks.