Why it matters: The company has been under scrutiny for years from regulators and watchdogs who say that its Autopilot and Full Self-Driving (FSD) systems promise more than they can achieve.
Driving the news: The National Highway Traffic Safety Administration disclosed that it has identified four reports "in which a Tesla vehicle experienced a crash after entering an area of reduced roadway visibility conditions" with FSD engaged.
"In these crashes, the reduced roadway visibility arose from conditions such as sun glare, fog, or airborne dust," NHTSA said in a public document.
In one of the crashes, a pedestrian was killed, while another crash reportedly caused an injury.
The other side: Tesla did not respond to a request for comment, but the company and CEO Elon Musk have repeatedly argued that the systems are safe.
Catch up quick: NHTSA said in a separate investigation in April that its investigators had identified hundreds of crashes — 13 of them deadly — in which Tesla's Autopilot system failed to protect its drivers and passengers over a 15-month period from 2022 to 2023.
