Its Stud Time!

If you have an all-wheel-drive vehicle and have studs all the way around, when the signs say “chains required” you do not need to chain up if you have all 4 wheels engaged and are carrying a set of chains in the vehicle.

Source: Washington Administrative Code 204-24-050

According to the Washington Department of Transportation (WSDOT), Washington allows vehicles to have studded tires from November 1st through March 31 but may extend the deadline if forecasts indicate severe winter weather conditions are likely across much of the state.