61-5-104. Exemptions. (1) The following persons are exempt from licensure under this chapter:

(a) a person who is a member of the armed forces of the United States while operating a motor vehicle owned by or leased to the United States government and being operated on official business;

(b) a person who is a member of the armed forces of the United States on active duty in Montana who holds a valid license issued by another state and the spouse of the person who holds a valid license issued by another state;

(c) a person on active duty in the armed forces of the United States and in immediate possession of a valid license issued to that person in a foreign country by the armed forces of the United States, for a period of 45 days from the date of the person's return to the United States;

(d) a person who temporarily drives, operates, or moves a road machine, farm tractor, as defined in 61-9-102, or implement of husbandry for use in intrastate commerce on a highway;

(e) a person who is a locomotive engineer, assistant engineer, conductor, brake tender, railroad utility person, or other member of the crew of a railroad locomotive or train being operated upon rails, including operation on a railroad crossing a public street, road, or highway. A person employed as described in this subsection is not required to display a driver's license to a law enforcement officer in connection with the operation of a railroad train within Montana.

(f) a person who temporarily drives, operates, or moves an off-highway vehicle on a forest development road in this state, as defined in 61-8-110, that has been designated and approved for off-highway vehicle use by the United States forest service if the person:

(i) is under 16 years of age but at least 12 years of age; and

(ii) at the time of driving, operating, or moving the off-highway vehicle, has in the person's possession a certificate showing the successful completion of an off-highway vehicle safety education course approved by the department of fish, wildlife, and parks and is in the physical presence of a person who possesses a license issued under this chapter.

(2) A nonresident who is at least 15 years of age and who is in immediate possession of a valid operator's license issued to the nonresident by the nonresident's home state or country may operate a motor vehicle, except a commercial motor vehicle, in this state.

(3) (a) A nonresident who is in immediate possession of a valid commercial driver's license issued to the nonresident by the nonresident's home jurisdiction, in accordance with the licensing and testing standards of 49 CFR, part 383, may operate a commercial motor vehicle in this state.

(b) For the purpose of this chapter, "jurisdiction" means a state, territory, or possession of the United States, the District of Columbia, a province or territory of Canada, or the federal district of Mexico.

(4) A nonresident who is at least 18 years of age, whose home state or country does not require the licensing of operators, may operate a motor vehicle as an operator only, for a period of not more than 90 days in any calendar year, if the motor vehicle is registered in the home state or country of the nonresident.

(5) (a) A driver's license issued under this chapter to a person who enters the United States armed forces, if valid and in effect at the time that the person enters the service, continues in effect so long as the service continues, unless the license is suspended, revoked, or cancelled for a cause as provided by law, and for up to 90 days following the date on which the licensee is honorably separated from the service.

(b) A person serving in the United States armed forces may renew the person's driver's license at any point of the person's service, and any renewed license continues in effect as long as the service continues, unless the license is suspended, revoked, or cancelled for a cause as provided by law.

(c) A person serving in the United States armed forces may apply for a Montana driver's license upon meeting the requirements in 61-5-103, and this license continues in effect as long as the service continues, unless the license is suspended, revoked, or cancelled for a cause as provided by law, and for up to 90 days following the date on which the licensee is honorably separated from the service.