On August 19, a van and a Tesla collided on National Freeway 1 in Miaoli, and both drivers exited their vehicles to talk while standing in the inner lane. A Volvo driven by a woman with adaptive cruise control engaged then hit them from behind at high speed, killing three people and injuring three others. Authorities are investigating whether the driver was over-reliant on the assist system and failed to pay attention to the road ahead.