Starting Friday, studded tires are now legal on Washington roadways.
They'll have to come off cars at the end of March, when the threat of snow-and-ice covered highways has passed.
The state Transportation Department would like to see studded tires banned year-around because of the ruts they cause on highways.
The department says drivers at higher elevations should use traction tires and carry chains. When chains are required on passes, studded tires alone will not meet the requirement unless your vehicle is an all-wheel drive vehicle.