Rivian R1T Incident

On February [XXX], 2025, at approximately 9:21 p.m. PT, the subject vehicle was traveling straight with highway assist (HWA) engaged in the left lane. According to the telematics data from the vehicle, at 9:21:25 p.m. a notification via driver display for high curvature warning was activated due to the vehicle detecting a curve in the highway. The notification was on for almost 10 seconds. At 9:21:54 p.m., the driver overrode Highway Assist by applying a steering torque of 4.2Nm, which transitioned the vehicle into Adaptive Cruise Control (ACC). The driver notification was activated, which should have alerted the driver to the transition from HWA to ACC. The vehicle then proceeded in a forward path with minimal steering input (less than 1.6Nm) until accelerometer data shows the vehicle came into contact with an object at 9:22:15 p.m. PT. The vehicle then came to a full rest moments later. Rivian believes that the driver failing to take control of the vehicle after he cancelled HWA was the cause of the crash and neither vehicle systems nor performance were factors in the crash.