07/10/2026
When filing UCR, should you count your trucks, or your trucks and trailers? How much interstate activity makes it required to report?
This is one of the most common questions carriers and owner-operators have during UCR registration.
In general, UCR fleet-size brackets are based on commercial motor vehicles, commonly called power units, not trailers. Counting trailers by mistake could put your business into the wrong UCR fee bracket.
Our latest Fmcsa.com article explains:
- What generally counts as a UCR power unit
- Why trailers are typically treated differently
- How fleet size affects your UCR fee bracket
- How MCS-150 information can affect your UCR filing
- Common mistakes for owner-operators and private fleets
Read the full guide > https://fmcsa.com/blog/is-my-ucr-power-unit-count-based-on-trucks-or-trailers/
Ready to file your UCR? Call our U.S.-based team at (800) 500-9295 for live filing assistance or visit FMCSA.com to self-file online.
FMCSA.com is an independent third-party service provider and is not affiliated with or part of the U.S. Government.
One of the most common questions carriers ask during UCR renewal is simple: Is my UCR power unit count based on trucks or trailers? The general answer is that UCR registration is based on commercial motor vehicles, also commonly referred to as power units, not trailers. That distinction matters. UCR...