North Dakota Truck Mud Flap Law
No mud-flap law here. North Dakota is one of eight states that never wrote a splash-guard rule, so there is no width or clearance number for a trooper to measure (NTEA guide). A missing flap alone won't put you out of service, and CVSA's 2025 criteria say rubber touching a tire isn't an OOS defect. The catch: you're judged by the state you're stopped in. Roll into Minnesota and its 9-inch rule (Minn. Stat. 169.733) applies to you.
A detail here is flagged medium confidence — confirm with the state statute before you rely on it.
What North Dakota makes you run
No mud-flap law here. North Dakota is one of eight states that never wrote a splash-guard rule, so there is no width or clearance number for a trooper to measure (NTEA guide). A missing flap alone won't put you out of service, and CVSA's 2025 criteria say rubber touching a tire isn't an OOS defect. The catch: you're judged by the state you're stopped in. Roll into Minnesota and its 9-inch rule (Minn. Stat. 169.733) applies to you.
Coverage and clearance
- Required: No specific statute
- Coverage: No set width. No North Dakota rule states a tread-coverage figure; there is no flap statute to enforce.
- Ground clearance: No set clearance. North Dakota has no mud-flap or splash-guard statute for trucks and trailers, so there is no ground-clearance number to meet.
- Fine: No dedicated mud-flap fine. A trooper can still write a general equipment/defective-vehicle citation if a bare tire throws debris, but there is no flap-specific charge.
North Dakota Mud Flap FAQ
Are mud flaps required on trucks in North Dakota?
How low can mud flaps hang in North Dakota?
What is the mud-flap fine in North Dakota?
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 Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it.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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