[IN THE NORTHERN CALIFORNIA AREA] CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM 3 MI EAST OF PLACERVILLE TO RIVERTON (EL DORADO CO) CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM 1.5 MI WEST OF KYBURZ TO MEYERS (EL DORADO CO)