Colorado Commercial vehicles traveling on certain roads must carry chains from Sept 1 to May 31. Connecticut Studded tires & non-skid devices may be used from Nov 15-April 30. Idaho No specific restrictions, it is advised to avoid it unless necessary. Kentucky May not be used unless the road is ice-covered or vehicle has an ice shoe at least 6 in wide. Limit on diameter & spacing. Massachusetts Permitted from Nov 1-May 1. Maryland Required when a snow emergency has been declared, not allowed on vehicles weighing more than 10,000 lbs. Minnesota Permitted when road conditions call for it. Studded pneumatic tires not allowed on state-registered vehicles. Montana Permitted Oct 1-May 1, not mandatory unless notices are posted. Specific regulations for studded tires. Nebraska Metal studs only permitted November 1-April 1. School buses, mail carrier vehicles, and emergency vehicles are permitted year-round. Nevada Required on all vehicles over 10,000 lbs when requirements in effect. Studded tires permitted between Oct 1-April 30. New York Required when a snow emergency has been declared. Ohio Only permitted between Nov 1-April 1, except for public safety or school bus.
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