Kentucky Truck Mud Flap Law
Kentucky sets no mud-flap width or clearance number. It has no specific splash-guard statute, so there is no Kentucky inch-rule to fail (per the NTEA state guide). Your rear tires still need reasonable coverage under general safe-equipment expectations, and a spray-heavy rig with bare rear wheels can still draw an officer's attention. Ignore blog charts that cite '49 CFR 393.86' for flap size; that federal rule is the rear impact guard, a separate crash device.
A detail here is flagged medium confidence — confirm with the state statute before you rely on it.
What Kentucky makes you run
Kentucky sets no mud-flap width or clearance number. It has no specific splash-guard statute, so there is no Kentucky inch-rule to fail (per the NTEA state guide). Your rear tires still need reasonable coverage under general safe-equipment expectations, and a spray-heavy rig with bare rear wheels can still draw an officer's attention. Ignore blog charts that cite '49 CFR 393.86' for flap size; that federal rule is the rear impact guard, a separate crash device.
Coverage and clearance
- Required: No specific statute
- Coverage: None set by state.
- Ground clearance: No set clearance. Kentucky has no state mud-flap width or clearance number on the books.
- Fine: No state mud-flap charge.
Kentucky Mud Flap FAQ
Are mud flaps required on trucks in Kentucky?
How low can mud flaps hang in Kentucky?
What is the mud-flap fine in Kentucky?
Reference information for planning, not legal advice. Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it. Last reviewed July 2026. Source: https://www.ntea.com/data/guide/uscanada-mud-flap-requirements-guide. See our Terms & Disclaimer.
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