Any non-resident fulltime student, properly enrolled and registered in a school, college, university, or trade school in this state, who holds a valid license from his home state or country.

Any person in the employ or service of the United States Federal Government while driving or operating a motor vehicle owned or leased by the United States Federal Government.

Any person under 16 years of age.

Any person while driving any farm tractor or implement of husbandry temporarily operated or moved on the highway.