Iowa Code § 321.176A: Persons exempt from commercial driver’s license requirements.

The following operators are exempt from the commercial driver’s license requirements:

1. A farmer or a person working for a farmer while operating a covered farm vehicle as defined in the federal Moving Ahead for Progress in the 21st Century Act, Pub. L. No. 112-141, §32934. The exemption provided in this subsection shall apply to farmers who assist each other through an exchange of services and shall include operation of a commercial motor vehicle between the farms of the farmers who are exchanging services.

2. A fire fighter while operating a fire vehicle for a volunteer or paid fire organization or a peace officer, as defined in section 801.4, while operating a commercial motor vehicle for a law enforcement agency, under conditions necessary to preserve life or property or to execute related governmental functions.

3. The following persons when operating commercial motor vehicles for military purposes:

a. Active duty military personnel.

b. Members of the military reserves.

c. Members of the national guard on active duty, including personnel on full-time national guard duty, personnel on part-time national guard training, and national guard military technicians.

d. Active duty United States coast guard personnel.

4. A person while operating a motor home solely for personal or family use.

5. A person operating a motor vehicle with a gross vehicle weight rating of less than twenty-six thousand one pounds towing a travel trailer or fifth-wheel travel trailer solely for personal or family use.

6. A home care aide operating a motor vehicle in the course of the home care aide’s duties.