Everyone gets sick of hearing. "Put on your seat belt!"But it's good advice. People who wear seat belts are 45 percent less likely to be killed while riding in the front seat of a car. The US government wants more seat belt laws. It says children aged 4 to 15 are often killed in car accidents. In 2005, there were 1,627 children aged 4 to 15 killed in car accidents. More than 1,000 of those children were not wearing seat belts. If they had been wearing seat belts, 500 of those children could be alive today. These children are too old to be in car seats, but they often sit in the back seat. Seat belt laws in many states, including Wisconsin, only require people in the front seat to wear seat belts. Children who aren't wearing seat belts can be thrown from the car. The risk of dying in an accident is three times greater if the person is thrown from the car. New laws could require children aged 4 to 8 to be in booster seats in the car. Booster seats help seat belts fit children properly. Right now, only 5 percent of children aged 4 to 8 are seated in booster seats. While parents have the choice of whether wearing seat belts or not, children are too young to make that choice. Even if you decide not to wear a seat belt, make sure you children are in seat belts and car seats. It's the law and it will save their lives. More than two-third of 1,627 children were killed because   _  .
they weren't using seat belts they were too careful when they walked on the road they were not old enough to sit in the car they wore seat belts