[IN THE CENTRAL CALIFORNIA & SIERRA NEVADA] CHAINS OR SNOW TIRES ARE REQUIRED FROM SILVER LAKE TO KIRKWOOD (AMADOR CO) CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM KIRKWOOD (AMADOR CO) TO 5 MI WEST OF PICKETTS JCT (ALPINE CO)