A for-hire carrier that is free from economic regulation. Trucks hauling certain commodities are exempt from Interstate Commerce Commission economic regulation. By far, the largest portion of exempt carriers transports agricultural commodities or seafood.
Exempt Carrier Definition – Operations & Supply Chain Dictionary
Exempt Carrier – SCM wiki
Exempt Carrier – Definition of Exempt Carrier by Merriam-Webster
What is an exempt for-hire (exempt commodities) motor carrier?
Logistics 101: Motor Carriers – Material Handling and Logistics (MHL News)