Traffic was backed up on highway-101 yesterday, after a vehicle went off the road. the solo-vehicle accident occurred in the northbound lanes, (near the market street exit). The car rolled over, and went off the highway into a ravine. The driver was not located in the area—he is believed to have extricated himself and left the scene. Authorities are trying to locate the driver, to check on any injuries and further investigate the cause of the wreck.