The Tesla Full Self-Driving semi-autonomous driving system is under the NHTSA's microscope for causing accidents in low-visibility road conditions.

The National Highway Traffic Safety Administration's evaluation is the first step toward a potential recall of 2.4 million Tesla vehicles

Officials are looking into whether self-driving systems in Tesla vehicles are safe in fog, glaring sun or other "reduced roadway visibility conditions," the National Highway Traffic Safety Administration said Friday.

Driving" technology under investigation by road safety watchdog after reports of crashes in low-visibility conditions.

Federal safety regulators are opening an investigation into Tesla's self-driving system, responding after years of complaints and accidents involving the s