The Oregon and Washington transportation departments say they won’t extend the 2015-16 studded tire season past March 31. Studded tires are allowed in Oregon and Washington from November 1 through March 31 each year. Laws in both states allow studded tire season to be extended when necessary, but current weather forecasts do not support an extension this year. The Oregon Department of Transportation encourages drivers to consider other types of traction tires or chains to help minimize roadway damage caused by studded tires. Drivers with studded tires on their vehicles after the deadline in Oregon can be charged with a Class C traffic violation, and in Washington can receive an infraction with a $124 fine.