Last updated: May 2026. State regulations are subject to change. Always verify with your state DOT.
There are no federal guidelines for mudflaps on trucks, buses, and trailers. Instead, individual states maintain their own requirements. We recommend identifying the strictest regulations for the states your fleet travels through, then equipping all trucks to meet those standards.
States With NO Mudflap Requirements
- District of Columbia
- Indiana
- Kentucky
- New Mexico
- North Carolina
- North Dakota
- South Carolina
- West Virginia
- Wyoming
States WITH Mudflap Requirements (Alphabetical)
Alabama
Mudflaps required. View Alabama regulations
Alaska
Mudflaps required. View Alaska regulations
Arizona
Mudflaps required. View Arizona regulations
Arkansas
Mudflaps required. View Arkansas regulations
California
Mudflaps required. View California regulations
Colorado
Mudflaps required. View Colorado regulations
Connecticut
Mudflaps required. View Connecticut regulations
Delaware
Mudflaps required. View Delaware regulations
Florida
Mudflaps required. View Florida regulations
Georgia
Mudflaps required. View Georgia regulations
Hawaii
Mudflaps required. View Hawaii regulations
Idaho
Mudflaps required. View Idaho regulations
Illinois
Mudflaps required. View Illinois regulations
Iowa
Mudflaps required. View Iowa regulations
Kansas
Mudflaps required. View Kansas regulations
Louisiana
Mudflaps required. View Louisiana regulations
Maine
Mudflaps required. View Maine regulations
Maryland
Mudflaps required. View Maryland regulations
Massachusetts
Mudflaps required. View Massachusetts regulations
Michigan
Mudflaps required. View Michigan regulations
Minnesota
Mudflaps required. View Minnesota regulations
Mississippi
Mudflaps required. Protectors or flaps required for rear wheels.
Missouri
Mudflaps required. View Missouri regulations
Montana
Mudflaps required. View Montana regulations
Nebraska
Mudflaps required. View Nebraska regulations
Nevada
Mudflaps required. View Nevada regulations
New Hampshire
Mudflaps required. View New Hampshire regulations
New Jersey
Mudflaps required. View New Jersey regulations
New York
Mudflaps required. View New York regulations
Ohio
Mudflaps required. View Ohio regulations
Oklahoma
Mudflaps required. View Oklahoma regulations
Oregon
Mudflaps required. View Oregon regulations
Pennsylvania
Mudflaps required. View Pennsylvania regulations
Rhode Island
Mudflaps required. View Rhode Island regulations
South Dakota
Mudflaps required. View South Dakota regulations
Tennessee
Mudflaps required. Mudguards on trucks with penalties for non-compliance.
Texas
Mudflaps required. View Texas regulations
Utah
Mudflaps required. View Utah regulations
Vermont
Mudflaps required. View Vermont regulations
Virginia
Mudflaps required. View Virginia regulations
Washington
Mudflaps required. View Washington regulations
Wisconsin
Mudflaps required. View Wisconsin regulations
Canada
Canadian provinces and territories have their own mudflap requirements. Consult the applicable province or territory Ministry of Transportation before traveling north of the border.
Mexico
Mexican regulations vary by state. Consult local authorities for specific requirements when traveling south of the border.
Pro Tip: Identify the strictest DOT mudflap regulations for all states your fleet travels through, then equip all trucks to meet those standards. This ensures compliance everywhere you operate.