Dixon firefighters assist Jason Martin, 28, of Vallejo, left and Ted Laxa, 61, of Fairfield, off their vehicles following a multi-vehicle accident on northbound Interstate 505, south of Allendale Road after a large hailstorm moved through Vacaville about 3 p.m., Tuesday, January 19, 2009. About eight vehicles slid off the roadway, causing two of them to roll. No serious injuries were reported.