Studs are legal here in Oregon from Nov. 1 through March. Being an ex-cheese head, it truly amazes me why studs are needed for pass levels around 5,000 ft. Maybe Oregonians just need to learn how to drive in snow! The Cascade Mountains are nothing compared to the Rockies where traction will save lives through the mountain passes.
Sure the roads get snow covered at pass level, but the sanders are out after a snow and all is good in a couple hours. The destruction that studs do to the highways at the lower elevations is amazing, ruts are formed in the road only after a couple years after repaving. My casual observance seems to show that most vehicles our here with studded tires are Suburbans with ski carriers on top. So 95% of the time, these vehicles are not in the mountains but down in the valley where temps. are usually around 50 degrees during the day. Status thing maybe?
HH