[IN THE CENTRAL CALIFORNIA & SIERRA NEVADA] CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM 4 MI EAST OF HAM'S STATION (AMADOR CO) TO PICKETTS JCT (ALPINE CO) IS REOPENED FROM 2 MI EAST OF KIRKWOOD TO 5 MI WEST OF PICKETTS JCT /CARSON PASS/ (ALPINE CO) AT 0113 HRS ON 1/23/16