302.080. The following persons are exempt from licensehereunder:
(1) Any person while operating any farm tractor orimplement of husbandry temporarily operated or moved on ahighway;
(2) A nonresident who is at least sixteen years of age andwho has in his immediate possession a valid license issued tohim in his home state or country;
(3) A nonresident who is at least eighteen years of age andwho has in his immediate possession a valid license issued tohim in his home state or country which allows such person tooperate a motor vehicle in the transportation of persons orproperty as classified in section 302.015;
(4) Convicted offenders of the department of correctionswho have not been convicted of a motor vehicle felony asfollows--driving while intoxicated, failing to stop after anaccident and disclosing his or her identity, or driving a motorvehicle without the owner's consent--may operate state-ownedtrucks for the benefit of the correctional facilities, providedthat such offender shall be accompanied by a correctionalofficer or other staff person in such truck.
(RSMo 1939 ยง 8445, A.L. 1943 p. 662, A.L. 1965 p. 477, A.L. 1989 1st Ex. Sess. H.B. 3, A.L. 1990 H.B. 974)