http://www.nhtsa.dot.gov/cars/rules/rulings/index_airbag.html
National Highway Traffic Safety Administration, U.S. Department of Transportation
This final rule seeks to preserve the benefits of air bags, while providing a means for reducing the risk of serious or fatal injury that current air bags pose to identifiable groups of people, e.g., people who cannot avoid sitting extremely close to air bags, people with certain medical conditions, and young children.