[IN THE SACRAMENTO VALLEY & THE LAKE TAHOE BASIN] IS CLOSED TO WESTBOUND TRAFFIC AT ECHO SUMMIT - DUE TO SNOW - MOTORISTS ARE ADVISED TO USE AN ALTERNATE ROUTE CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM TWIN BRIDGES TO MEYERS (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.