A bill to amend chapter 4 of title 23, United States Code, relating to the addition of safety belt use requirements as part of the highway safety program of each State.

Requires that, within two years after enactment of this Act, each State shall, as part of its highway safety program, enact a law requiring the use of safety belts in light-duty motor vehicles.

Directs the States enacting such legislation to gather data necessary to provide a basis for evaluating such safety belt use law.

Provides that each State not enacting such legislation shall have its share of Federal-aid highway funds reduced ten percent until it implements such legislation.