R1 Requirement 1:
Chains required on all vehicles except passenger vehicles & light trucks under 6,000 lbs with snow tires on at least two drive wheels. R2 Requirement 2:
Chains required on all vehicles except 4WD/AWD under 6,500 lbs with snow tires on all four wheels. R3 / CLOSED Requirement 3:
Chains required on ALL vehicles, no exceptions. Road may be closed to all traffic.
Loading chain controls
Road Cameras Caltrans CCTV — refreshes every 2 min