Alabama Truck Mud Flap Law
Alabama requires mudflaps behind the rear wheels of every bus, truck and semi-trailer, sized to keep gravel, stones and debris off following windshields (Ala. Admin. Code r. 770-X-10-.17-5-1-.10). The rule is functional, not numeric: no inch clearance and no tread-width figure in the code. At roadside an officer checks that a flap is present, covers the tire, and is not torn or curled. A missing or shredded flap draws a correctable equipment citation, not an out-of-service order.
What Alabama makes you run
Alabama requires mudflaps behind the rear wheels of every bus, truck and semi-trailer, sized to keep gravel, stones and debris off following windshields (Ala. Admin. Code r. 770-X-10-.17-5-1-.10). The rule is functional, not numeric: no inch clearance and no tread-width figure in the code. At roadside an officer checks that a flap is present, covers the tire, and is not torn or curled. A missing or shredded flap draws a correctable equipment citation, not an out-of-service order.
Coverage and clearance
- Required: Yes
- Coverage: Must cover the rear of the rear wheels; the rule states no explicit tread-width number.
- Ground clearance: No set clearance. Functional rule only: the flap must cover the rear of the rear wheels enough to block thrown gravel and debris. No inch figure in the code.
- Fine: Correctable equipment citation; no fixed statutory dollar amount set by the rule.
Alabama Mud Flap FAQ
Are mud flaps required on trucks in Alabama?
How low can mud flaps hang in Alabama?
What is the mud-flap fine in Alabama?
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 Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it.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://admincode.legislature.state.al.us/api/rule/770-X-10-.17-5-1-.10. See our Terms & Disclaimer.
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