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Tesla's Collision-Avoidance System Under Scrutiny After Brain Injury Lawsuit

2/25/2026, 11:00:59 PM

Incident Overview: Collision and Injuries

On December 4, 2023, Samaneh Movassaghi, a 39-year-old artificial intelligence researcher, was involved in a serious car accident in her Tesla Model Y in San Francisco. The incident occurred when a black Volkswagen Passat, driven by a woman who ran a red light, collided with Movassaghi's vehicle at approximately 11:30 p.m. The crash resulted in significant damage to both cars and left Movassaghi with a traumatic brain injury, leading to lasting cognitive issues. She has since filed a product liability lawsuit against Tesla, claiming that the vehicle's collision-avoidance systems failed to activate prior to the crash.

Allegations Against Tesla: Safety System Failures

Movassaghi's lawsuit highlights critical failures in Tesla's safety features, particularly following the company's decision to eliminate radar and ultrasonic sensors in favor of a camera-only system for its advanced driver assistance technologies. According to her attorney, Dominic Flamiano, this "deliberate and reckless decision" has been linked to the accident, as the camera system was ineffective in detecting the oncoming vehicle due to obstructions in the environment. The complaint asserts that had a more robust system been in place, the collision could have been avoided.

Background on Tesla's Safety Decisions

In 2021, Tesla ceased the installation of radar sensors in its vehicles, and in 2022, it removed ultrasonic sensors, opting for a less expensive camera-only approach. This shift has drawn criticism from experts who argue that a multi-sensor system is essential for reliable collision avoidance. Movassaghi's complaint claims that Tesla's internal data indicated the new setup was "unreliable" and "capable of catastrophic failure."

Ongoing Legal Challenges for Tesla

Movassaghi's case is part of a broader pattern of legal actions against Tesla concerning its vehicle safety claims. Previous lawsuits have included incidents involving fatalities and serious injuries attributed to alleged defects in Tesla's technology. Critics argue that Tesla, under CEO Elon Musk, has oversold the capabilities of its vehicles to enhance market perception and stock value, often at the expense of safety.

Impact on Movassaghi's Life and Career

As a result of the accident, Movassaghi has reported ongoing neurological, physiological, and psychological effects, including impaired concentration, emotional trauma, and difficulties in performing complex reasoning tasks. These issues have significantly impacted her professional life, leading to reduced earnings and stalled career opportunities. She is seeking damages for medical expenses, lost earnings, and punitive damages.

Official Statements & Responses

Tesla has not publicly commented on the specifics of Movassaghi's lawsuit or the allegations regarding its safety systems. The company did issue a recall for the 2022 Model Y following the incident, which Movassaghi's complaint suggests indicates prior knowledge of safety defects.

What's Next: Legal Proceedings

Movassaghi's lawsuit is currently being processed in federal court after its initial filing in San Francisco Superior Court. The case will likely explore the implications of Tesla's safety decisions and the effectiveness of its collision-avoidance technology in detail.