The video from the pursuing officer's car begins at the intersection of U.S. 377 and Chapman Road, about a mile west of the collision site.
The patrol car is sitting behind the motorcycle, which is stopped at the traffic light with the left-turn signal flashing. When the traffic light turns green, the motorcycle turns east onto Chapman Road and the patrol car follows. At that point, the officer turns on his lights and siren, and the motorcycle speeds away.