Seat belt 1967, Volvo started to install lap belts in the rear seats. In 1972, Volvo upgraded the rear seat belts to a three-point belt. In crashes, unbelted rear passengers increase the risk of belted front seat occupants' death by nearly five times. As with adult drivers and passengers, the advent of seat belts was accompanied by calls for their use by child occupants, including legislation requiring such use. Generally children using adult seat belts suffer significantly lower injury risk when compared to non-buckled children. The UK extended compulsory seatbelt wearing to child passengers under the age of 14 in 1989. It
Seat belt laws in the United States damages far greater than if they had been using a seatbelt. However, when in court, most states protect motorists from having their damages reduced in a lawsuit due to the nonuse of a seatbelt, even if they were acting in violation of the law by not wearing the seatbelt. Currently, damages may be reduced for the nonuse of a seatbelt in 16 states: Alaska, Arizona, California, Colorado, Florida (See F.S.A. 316.614(10)), Iowa, Michigan, Missouri, Nebraska, New Jersey, New York, North Dakota, Ohio, Oregon, West Virginia, and Wisconsin. Seat belt laws are effective in reducing car crash deaths. One study found