321.176  Persons exempt from driver’s licensing requirements.
  The following persons are exempt from driver’s licensing requirements:
  1.  Any person while operating a military motor vehicle in the service of the armed forces of the United States.
  2.  Any person while operating a farm tractor or implement of husbandry to or from the home farm buildings to any adjacent or nearby farmland for the exclusive purpose of conducting farm operations.
  3.  A nonresident operating a motor vehicle within the legal scope of the nonresident’s home state or country license except a nonresident may operate a commercial motor vehicle only in compliance with section 321.174.
[C31, 35, §4960-d3, -d4; C39, §5013.03; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.176; 81 Acts, ch 105, §1, 2]
90 Acts, ch 1230, §21; 98 Acts, ch 1073, §11