Motorcycle helmet laws by state

Alabama
all riders
all are covered

Alaska
17 and younger
all are covered

Arizona
17 and younger
moped, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of 1.5 or less, and a maximum speed of 25 mph

Arkansas
20 and younger
all are covered

California
all riders
all are covered

Colorado
17 and younger and passengers 17 and younger
all are covered

Connecticut
17 and younger
all are covered

Delaware
18 and younger
moped, defined by the state as a pedal or non-pedal bicycle having two tandem wheels and an engine displacement of less than 55 cc or an electric motor rated between 751 and 2000 watts, if the operator is 17 or older

District of Columbia
all riders
all are covered

Florida
20 and younger
moped, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of 2 or less, and maximum speed of 30 mph, if the operator is 16 or older

Georgia
all riders
moped, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of 2 or less and maximum speed on 30 mph

Hawaii
17 and younger
all are covered

Idaho
17 and younger
moped, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of less than 2, and maximum speed of 30 mph

Illinois
no law
no law

Indiana
17 and younger
all are covered

Iowa
no law
no law

Kansas
17 and younger
all are covered

Kentucky
20 and younger
moped, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of 2 or less, and maximum speed of 30 mph

Louisiana
all riders
all are covered

Maine
17 and younger
motorized bicycle, defined by the state as having brake horsepower of 1.5 or less and maximum unassisted speed of 25 mph; may have pedals

Maryland
all riders
all are covered

Massachusetts
all riders
all are covered

Michigan
20 and younger
moped, defined by the state as having an engine displacement of 50 cc or less and maximum speed of 30 mph, if the operator is 19 or older

Minnesota
17 and younger
all are covered

Mississippi
all riders
all are covered

Missouri
25 and younger
motorized bicycles, defined by the state as having an engine displacement of 50 cc or less, brake horsepower less than 3, and maximum speed of 30 mph

Montana
17 and younger
moped, defined by the state as having brake horsepower of 2 or less and maximum unassisted speed of 30 mph

Nebraska
all riders
all are covered

Nevada
all riders
all are covered

New Hampshire
no law
no law

New Jersey
all riders
all are covered

New Mexico
17 and younger
moped, defined by the state as having an engine displacement less than 50 cc and maximum speeds of 30 mph

New York
all riders
class C limited use motorcycle, defined by the state as having maximum speeds of 20 mph

North Carolina
all riders
all are covered

North Dakota
17 and younger
all are covered

Ohio
17 and younger
all are covered

Oklahoma
17 and younger
motor-driven cycle, defined by the state as having an engine displacement greater than 35 cc but less than 150 cc or electric motor that produces more than 1000 watts moped, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of 2 or less and maximum speed of 30 mph

Oregon
all riders
all are covered

Pennsylvania
20 and younger
all are covered

Rhode Island
20 and younger
all are covered

South Carolina
20 and younger
motorcycle three-wheel vehicle, defined by the state as having detachable side cars, saddle-type seat, and handlebars or motorcycle-type steering

South Dakota
17 and younger
all are covered

Tennessee
all riders
all are covered

Texas
20 and younger
all are covered

Utah
20 and younger
all are covered

Vermont
all riders
motor-driven cycle, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of 2 or less, and maximum speed of 30 mph

Virginia
all riders
all are covered

Washington
all riders
all are covered

West Virginia
all riders
all are covered

Wisconsin
17 and younger
moped, defined by the state as having an engine displacement of 130 cc or less, maximum speed of 30 mph, and fully operative pedals

Wyoming
17 and younger
moped, defined by the state as having an engine displacement of 50 cc or less, brake horsepower of 2 or less, and maximum speeds of 30 mph