Iowa Code § 327B.1: Authority secured and registered.

1. It is unlawful for a carrier to perform an interstate transportation service for compensation upon the highways of this state without first registering the authority obtained from the United States department of transportation or evidence that such authority is not required with the state department of transportation.

2. The department shall participate in the unified carrier registration plan and agreement for regulated motor carriers as provided in 49 U.S.C. §14504a and United States department of transportation regulations.

3. As provided in 49 U.S.C. §14504a, a foreign or domestic motor carrier, motor private carrier, leasing company, broker, or freight forwarder shall not operate any motor vehicle on the highways of this state without first registering the motor vehicle under the unified carrier registration agreement and paying all required fees.