Traction tires advised - oversize loads prohibited. Oversize vehicles may be restricted from roadways during severe weather conditions.

Traction tires required - Passenger vehicles must use approved traction tires. Chains are required on all vehicles over 10,000 gross vehicle weight rating (GVWR), including large passenger trucks and SUV's over 10,000 GVWR.

Tire chains required - except four-wheel/all-wheel drive. WSDOT follows WAC Title 204, chapters 22 (Standards for tire chains) and 24 (Traction devices).

On a front-wheel drive vehicle, you must install chains on the front two tires. On a rear-wheel drive vehicle, you must install chains on the rear two tires.

Under extreme weather conditions, the Washington State Patrol can mandate that all vehicles chain up, including four-wheel/all-wheel drive vehicles. Drivers must then install chains on one set of drive tires.

If your vehicle can not accommodate chains, you can either choose to drive a different vehicle or wait until WSDOT removes the chain requirement. The WSP could cite or turn back any vehicles in noncompliance.