Alabama

11-06-67

All riders.

Alaska

11-06-67

All riders.

Arizona

1-01-69

All riders.

Repealed effective 5-27-76; helmet use required for riders under 18.

Arkansas

7-10-67

All riders.

Repealed effective 8-01-97; helmet use required for riders under 21.

California

1-01-85

Helmet use required for riders under 15 ½.

Effective 1-01-92 helmet use required for all riders.

Colorado

7-01-69

All riders.

Repealed effective 5-20-77.

Connecticut

10-01-67

All riders.  Not enforced until 2-01-74. 

Repealed effective 6-01-76. 

Effective 1-01-90 helmet use required for riders under 18.

Delaware

10-01-68

All riders.

Repealed effective 6-10-78; helmet use required for riders under 19. 
Also required that a helmet be carried on the motorcycle for riders 19 and older.

District of Columbia

10-12-70

All riders.

Florida

9-05-67

All riders.

Repealed effective 7-01-00; helmet use required for riders under 21.

Georgia

8-31-66

All riders.

Hawaii

5-01-68

All riders.

Repealed effective 6-07-77; helmet use required for riders under 18.

Idaho

1-01-68

All riders.

Repealed effective 3-29-78; helmet use required for riders under 18.

Illinois

1-01-68

All riders.

Repealed effective 6-17-69 after being declared unconstitutional by the
State Supreme Court on 5-28-69

Indiana

7-01-67

All riders.

Repealed effective 9-01-77. 

Effective 6-01-85 helmet use required for riders under 18.

Iowa

9-01-75

All riders.

Repealed effective 7-01-76.

Kansas

7-01-67

All riders.

Repealed effective 3-17-70; helmet use required for riders under 21. 

Effective 7-01-72 helmet use required for all riders. 

Repealed effective 7-01-76; helmet use required for riders under 16. 

Effective 7-01-82 helmet use required for riders under 18.

Kentucky

7-01-68

All riders.

Repealed effective 7-15-98; helmet use required for riders under 21.

Louisiana

7-31-68

All riders.

Repealed effective 10-01-76; helmet use required for riders under 18.  

Effective 1-01-82 helmet use required for all riders.

Repealed effective 8-15-99; helmet use required for riders under 18.

Maine

10-07-67

All riders.

Repealed effective 10-24-77. 

Effective 7-03-80 helmet use required for riders under 15.

Maryland

9-01-68

All riders.

Repealed effective 5-29-79; helmet use required for riders under 18.

Effective 10-01-92 helmet use required for all riders.

Massachusetts

2-27-67

All riders.

Michigan

3-10-67

All riders.

Repealed effective 6-12-68. 

Effective 9-01-69 helmet use required for all riders.

Minnesota

5-01-68

All riders.

Repealed effective 4-06-77; helmet use required for riders under 18.

Mississippi

3-28-74

All riders.

Missouri

10-13-67

All riders.

Montana

7-01-73

All riders.

Repealed effective 7-01-77; helmet use required for riders under 18.

Nebraska

5-29-67

Never enforced. 

Declared unconstitutional by State Supreme Court and repealed effective 9-01-77.

Effective 1-01-89 helmet use required for all riders.

Nevada

1-01-72

All riders.

New Hampshire

9-03-67

All riders.

Repealed effective 8-07-77; helmet use required for riders under 18.

New Jersey

1-01-68

All riders.

New Mexico

5-01-67

Helmet use required for riders under 18 and all passengers.

Effective 7-01-73 helmet use required for all riders.

Repealed effective 6-17-77; helmet use required for riders under 18.

New York

1-01-67

All riders.

North Carolina

1-01-68

All riders.

North Dakota

7-01-67

All riders.

Repealed effective 7-01-77; helmet use required for riders under 18.

Ohio

4-02-68

All riders.

Repealed effective 7-01-78; helmet use required for riders under 18.

Oklahoma

4-27-67

All riders.

Repealed effective 4-07-69; helmet use required for riders under 21.

Effective 7-01-75 helmet use required for all riders.

Repealed effective 5-03-76; helmet use required for riders under 18.

Oregon

1-01-68

All riders.

Repealed effective 10-04-77; helmet use required for riders under 18. 

Effective 6-16-89 helmet use required for all riders.

Pennsylvania

9-13-68

All riders.

Puerto Rico

7-20-60

All riders.

Rhode Island

6-30-67

All riders.

Repealed effective 5-21-76; helmet use required only for passengers.

Effective 7-1-92 helmet use required for riders under 21.

South Carolina

7-01-67

All riders.

Repealed effective 6-16-80; helmet use required for riders under 21.

South Dakota

7-01-67

All riders.

Repealed effective 7-01-77; helmet use required for riders under 18.

Tennessee

6-05-67

All riders.

Texas

1-01-68

All riders.

Repealed effective 9-01-77; helmet use required for riders under 18.

Effective 9-01-89 helmet use required for all riders.

Repealed effective 9-01-97; helmet use required for riders under 21.

Utah

5-13-69

Helmets required only on roads with speed limits of 35 mph or higher. 

Effective 5-08-77 helmet use required for riders under 18 on all roads.

Vermont

7-01-68

All riders.

Virginia

1-01-71

All riders.

Washington

7-01-67

All riders.

Repealed effective 7-01-77. 

Effective 7-01-87 helmet use required for riders under 18.  Effective 6-8-90 helmet use required for all riders.

West Virginia

5-21-71

All riders.

Wisconsin

7-01- 68

All riders.

Repealed effective 3-19-78; helmet use required for riders under 18.

Wyoming

5-25-73

All riders.

Repealed effective 5-27-83; helmet use required for riders under 19.