Big Rig without trailer into pickup truck on its side. View PhotosSonora, CA — The CHP has identified the drivers involved in a crash on Tuolumne Road yesterday involving a big rig. The truck swerved into oncoming traffic and clipped the backside of a Ford pick-up truck driven by 79-year –old Fred Vigil. The big rig went across the roadway and crashed into another pick-up parked at the PG & E parking lot. The first pick-up truck blocked a lane of Tuolumne Road.