The investigation was launched on Thursday in response to Tesla’s revelation of four collisions in which the cars entered regions with poor vision, such airborne dust, fog, and sun glare. According to the agency, AP reports that one of the collisions ended in the death of a pedestrian and another in an injury.

The United States’ National Highway Traffic Safety Administration (NHTSA) has opened a fresh inquiry into Tesla’s “Full Self-Driving” system in response to allegations of collisions in low visibility, including one pedestrian-related fatality.

The investigation was launched on Thursday in response to Tesla’s revelation of four collisions in which the cars entered regions with poor vision, such airborne dust, fog, and sun glare. According to the agency, AP reports that one of the collisions ended in the death of a pedestrian and another in an injury.

The system’s capacity to “detect and respond appropriately to reduced roadway visibility conditions, and if so, the contributing circumstances for these crashes,” would be evaluated by NHTSA investigators.

Approximately 2.4 million Tesla vehicles built between 2016 and 2024 are the subject of the inquiry.

Tesla has always insisted that human drivers must be ready to step in when necessary and that the Full Self-Driving system is not capable of operating cars on its own.

On Friday, a message was sent to Tesla requesting a remark; however, no answer was given right away.

During a ceremony at a Hollywood studio last week, Tesla unveiled a completely autonomous robotaxi that did not require a pedal board or steering wheel.

Elon Musk, the CEO, stated that robotaxis will be accessible by 2026 and that completely autonomous vehicles—those that do not require human drivers—should be in service by the following year.