Conn. Agencies Regs. § 14-137-121
In accordance with the provisions of sections 14-39 and 14-40 of the Connecticut General Statutes, and subject to the exceptions stated therein, any nonresident sixteen (16) years of age or older, including any person who is admitted to the United States as a temporary visitor, may operate any registered motor vehicle on the highways of this state, provided that such nonresident is the holder of a motor vehicle operator's license issued by any state or territory of the United States, or by any country that is a member of a currently valid agreement entered into with the United States that provides for the reciprocal extension of driving privileges. Such motor vehicle operator's license shall be in the possession of such nonresident and must be current and valid according to its terms. If such motor vehicle operator's license is in any language besides English or Spanish, or if it has not been issued by a territory of Canada, it shall be accompanied by an English translation and certified under the form of an International Driving Permit, in accordance with Article 24 of the United Nations Convention on Road Traffic (1949), unless the validity of the license is readily ascertainable by law enforcement personnel without the benefit of such official translation.
Conn. Agencies Regs. § 14-137-121