The California Highway Patrol (CHP) is investigating two successive accidents on Interstate 5 in Newhall involving nine big-rigs. In the early morning hours, the driver of a dump truck traveling along I-5 lost control of the vehicle causing a crash involving four other big-rigs. A short time later, five big-rigs approached the scene and collided. One driver was trapped in the cab of his truck. Emergency crews were able to help the driver out of the cab, but he had sustained moderate to severe injuries.