One driver was taken to Santa Barbara Cottage Hospital Friday afternoon following a collision with an RV on Highway 154.
The driver suffered major injuries, according to Santa Barbara County Fire Capt. Dave Zaniboni.
The cause of the collision is under investigation by the California Highway Patrol.
The crash occurred just before 12:30 p.m. near San Antonio Creek Road. The two occupants for the RV were not injured.
Highway 154 is down to one lane alternating eastbound and westbound traffic. Motorists should expect major delays until crews can clear the wrecked vehicles from the scene.