San Francisco, California ( – A major injury accident on Highway 101, north of Paso Robles, blocked both lanes around 6:45 a.m. Wednesday, leaving authorities to determine which party was at fault.

A pick-up truck and another vehicle crashed into a big rig, which jackknifed and blocked the southbound lanes.

Emergency crews reported that the driver of the truck was found inside the cabin of his vehicle trapped and unresponsive. He was immediately taken to a local hospital with major injuries.

The California Highway Patrol has since reopened both lanes, and believes a major factor in the accident may have been poor visibility due to heavy fog. Investigators have not yet determined which party is at fault.

If you have been injured in a  San Francisco truck accident lawyer  ( or need the representation or legal advice of an experienced personal injury lawyer, contact the San Francisco personal injury attorneys ( at Mary Alexander & Associates at (866) 802-9497.