Ryan Willis Jones, 30, was headed eastbound in the tunnel just west of Treasure Island around 5 a.m. when he was knocked off his 2004 Harley-Davidson, the CHP said.

Jones was rushed to San Francisco General Hospital and died from his injuries less than one hour later, according to the San Francisco medical examiner.

Daniel Olivera, 31, of Oakland, was the driver of the 1998 Saab that struck Jones’ motorcycle, the CHP said. He was allegedly intoxicated and speeding when he made an “unsafe” lane change, causing the collision, the investigating officer said.

They say Deputy Julie Seale was struck by Maria G. Chamorrovega.

Both vehicles reportedly were traveling westbound on Highway 60, with Deputy Seale in the center lane and the suspect vehicle in the left lane.

As both vehicles approached Mt. Carmel Road, the Chamorrovega’s vehicle started to make a left turn, and then for an unknown reason, abruptly made a right turn, turning into the deputy’s vehicle.

Her Mazda struck the deputy’s vehicle on the front driver’s corner causing approximately $1,500 in damage.

Deputy Seale was transported by Fire Rescue to Brandon Regional Hospital for evaluation. Chamorrovega was not injured, and she was taken to the Orient Road Jail and charged with DUI.

ABCNews