[IN THE NORTHERN CALIFORNIA AREA] TRAFFIC IS BEING HEL FROM ECHO SUMMIT TO THE NORTH JCT OF SR 89 (EL DORADO CO) - DUE TO AVALANCHE CONTROL CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM TWIN BRIDGES TO ECHO SUMMIT (EL DORADO CO) PLEASE RESEARCH CHAIN CONTROL LOCATIONS AS CALTRANS IS CURRENTLY WORKING TO UPDATE CHAIN CONTROL DESCRIPTIONS FOR CONSISTENCY WITH INTERNET MAPPING, LIKE GOOGLE MAPS & MAPQUEST.