If you travel through the state of Kentucky, in a commercial vehicle (private and/or for-hire), with a registered GVWR of 60,000 lbs or more, you will need a KYU # or you will need to buy a temporary KYU permit.
The KYU number issued by the Kentucky Transportation Cabinet is a permanent weight distance tax license, no yearly renewals. Kentucky does require that you maintain a vehicle inventory for your KYU number. All trucks will need to be listed on your KYU number inventory and must be added or deleted as your trucks change. You will also need to complete quarterly returns based on the miles traveled in the state of KY.