US transportation authorities are looking into whether Tesla's Autopilot changes rolled out earlier this year actually address the safety concerns that resulted in a recall.

The National Highway Traffic Safety Administration is investigating whether Tesla did enough to improve driver safety after recalling roughly 2 million vehicles to fix a software defect in their autopilot monitoring system.

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

The U.S. National Highway Traffic Safety Administration said Friday it has launched an investigation of Tesla Inc.’s December recall of 2 million

U.S. auto safety regulators said Friday they have opened an investigation into whether Tesla's recall of more than 2 million vehicles announced in December to install new Autopilot safeguards is adequate.