Kentucky Intrastate Motor Carrier Authority (KYU vs USDOT) – Understanding the difference.

Oct. 20, 2025, 6:31 a.m.
Trucking companies operating in Kentucky often get confused between the KYU Number and the USDOT Number. While both are essential for compliance, they serve different purposes depending on where and how your vehicles operate.
Kentucky Intrastate Motor Carrier Authority (KYU vs USDOT) – Understanding the difference.

What is a KYU Number?

The Kentucky Weight Distance (KYU) Number is required for any motor carrier operating intrastate or interstate within Kentucky with a registered weight of 60,000 pounds or more.
It’s part of the Kentucky Weight Distance Tax system, which charges carriers based on the number of miles driven on Kentucky highways.

  • Required for trucks 60,000 lbs or more

  • Issued by the www.kentuckytruckingonline.com

  • Used for weight distance tax reporting

  • Must be filed quarterly to stay compliant

Failure to maintain an active KYU account or missing filings can lead to penalties, fines, or suspension of credentials.

What is a USDOT Number?

The USDOT Number is issued by the Federal Motor Carrier Safety Administration (FMCSA) and is required for all commercial vehicles operating interstate (across state lines).
It serves as a national identification number for monitoring safety, inspections, and compliance records.

  • Required for interstate carriers (and some intrastate ones depending on cargo type)

  • Used for safety monitoring and compliance tracking

  • Must be renewed biennially (every 2 years)

Key Differences

Feature KYU Number USDOT Number
Issued by Kentucky Transportation Cabinet Federal Motor Carrier Safety Administration
Applies to Vehicles ≥ 60,000 lbs in Kentucky Commercial carriers crossing state lines
Purpose Tax tracking (Weight Distance) Safety and compliance monitoring
Filing Frequency Quarterly Biennial update
Scope State-level (Kentucky only) Federal-level (All U.S.)

Do You Need Both?

Yes — if your trucking company operates in and out of Kentucky, you will need both a KYU number and a USDOT number to stay compliant.
If you only operate within Kentucky (intrastate) and your trucks weigh 60,000 lbs or more, you may need only a KYU number, unless carrying hazardous materials or passengers.

Bottom Line

Understanding the difference between KYU and USDOT credentials ensures your trucking business runs smoothly without costly violations.
Always verify your requirements through the Kentucky Transportation Cabinet and the FMCSA before hitting the road.