The car, a Volvo XC90 sport utility vehicle outfitted with a sensor system, was in autonomous mode when it struck Elaine Herzberg around 10 p.m. on Sunday. There was a human safety driver at the wheel, but the car was carrying no passengers.
The vehicle was going about 40 miles an hour on a street with a 45-mile-an-hour speed limit when it struck Ms. Herzberg, 49, who was walking her bicycle across the street, according to the Tempe police.
Authorities on Wednesday released portions of a dashboard camera recording from the vehicle, which showed the exterior and interior of the car moments before the accident.