The Wyoming Department of Transportation is reminding drivers just what it means when the chain law is imposed on the state’s highways. According to Wyoming Highway Patrol Administrator Colonel John Butler, the state has a two tiered chain law that may be imposed depending upon the conditions. Level 1 restrictions mean vehicles must be equipped with either tire chains or adequate snow tires, or be all-wheel-drive vehicles. Under more severe conditions, Level 2 restrictions may be imposed which require the vehicles be equipped specifically with tire chains or must be all-wheel-drive vehicles with adequate mud and snow tires. Butler says Highway Patrol troopers may make compliance checks when the chain law is in effect. A driver who violates the chain law and causes a highway closure can be fined $750 while other chain law violations carry a $250 penalty.