Research has found that lap/shoulder safety belts, when used, reduce the risk of fatal injury to front-seat passenger car occupants by 45 percent and the risk of moderate-to-critical injury by 50 percent. (NHTSA 2005 Traffic Safety Facts Occupant Protection)
The page you just tried to get to seems to be lost. It may very well have been relocated or renamed with our recent sitewide upgrade. Maybe check out the Site Map?
Easier still, try using the search engine to find what you are looking for.