You have to wear your seat belt when you’re driving a car or riding in the front seat. This is the law in every state except New Hampshire. But what about the back seat? Individual states get to decide the law behind wearing those seat belts. According to the Government Highway Safety Association website, 40 states require you to wear your seat belt while riding in the back seat of a vehicle. Here are the 10 states that leave it up to you and your back seat passengers…