And one 1997 study of traumatic brain injury patients in 14 states showed that 46 percent of the patients whose injuries were caused by motor vehicle crashes were not wearing seat beltsWhy Wear A Seat Belt?In the United States, only one state,Intellux New Hampshire, does not require adults to wear a seat belt. Many other states make exceptions to their seat belt requirements for children under a certain age, or for those sitting in the back seat of the car.http://www.healthcaresups.com/intellux/