-[IN THE SAN FRANCISCO BAY AREA - SOLANO CO]      NO TRAFFIC RESTRICTIONS ARE REPORTED FOR THIS AREA.            [IN THE NORTHERN CALIFORNIA AREA & SIERRA NEVADA]      CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW  TIRES ON ALL 4 WHEELS FROM KINGVALE (PLACER CO) TO THE DONNER LAKE INTERCHANGE  (NEVADA CO) 
+[IN THE SAN FRANCISCO BAY AREA - SOLANO CO]      NO TRAFFIC RESTRICTIONS ARE REPORTED FOR THIS AREA.            [IN THE NORTHERN CALIFORNIA AREA & SIERRA NEVADA]  **FOR WESTBOUND TRAFFIC:      CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW  TIRES ON ALL 4 WHEELS FROM THE DONNER LAKE INTERCHANGE (NEVADA CO) TO KINGVALE  (PLACER CO)