The Washington Department of Transportation (WSDOT) will start enforcing chain requirements on Nov. 1.
By that date, all vehicles over 10,000 pounds traveling through mountain passes or higher elevations must carry tire chains at all times.
When it’s snowing and the “Chains Required” signs are up, all cars will be required to carry chains, including AWD vehicles.
WSDOT clarified that while studded tires are legal, they do not meet the state’s chain requirements.
This means drivers of four-wheel-drive and all-wheel-drive vehicles must still carry chains — and install them when signs indicate that chains are required for all vehicles.
The agency is also asking drivers to consider alternatives to studded tires, noting that they cause about $20 million in road damage each year.
WSDOT says if you are looking for alternatives to studded tires, you can talk to a local tire shop about stud-free winter traction tire options.
The chain requirement is currently scheduled to last until March 31.
You can find approved traction tire devices here.
For a list of approved traction tire devices and more information about winter driving requirements, visit the WSDOT website.