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.
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.
If your vehicle can not accommodate chains, tire snow socks, are an approved alternative for passenger vehicles and those with five or less axles. These are textile tire covers, officially called "alternative traction devices."
Vehicles differ, so please check your vehicle’s owner’s manual or see what the manufacturer recommends whenever considering an alternative traction device.
For more details, visit the Washington State Patrol's traction questions and answers page.
Four-wheel/all-wheel drive vehicles are exempt from chain requirements when all wheels are in gear and are equipped with approved traction devices, provided that tire chains for at least one set of drive tires are carried in the vehicle. See WAC 204-24-050.
View the Stevens Pass and Snoqualmie Pass map of chain up and off areas (pdf 50kb).