Winter Driving Tips

Winter driving on roads and highways in the snow-capped mountains of California can be a pleasant adventure - or it can be frustrating, tiring and sometimes even hazardous. The California Highway Patrol provides the following information to help make your mountain driving safe and pleasant.

Before Heading for Snow Country:

Chain Requirements

​R1: ​Chains required - snow tread tires (MSS on side of tire) allowed.
R2: ​Chains required on all vehicles except four-wheel drives with snow tires.
R3: Chains required - all vehicles no exceptions.

R1 and R2 are the most common conditions. The highway is usually closed before an R3 condition is imposed.

Chain Controls

Road Conditions Hotline

The CHP urges you to check road conditions often. The best way to do this is to call the
California Department of Transportation (Caltrans) Road Conditions Hotline: 1-800-427-ROAD  (1-800-427-7623)