Each of the 50 states has laws governing when a child should be in booster seats. In general, they will refer to the manufacturer's weight and height restrictions, but some state laws are particular about what ages should be in a booster or car seat. For example, Texas requires that children under eight years old be in the appropriate safety seat depending on their height and weight. To be in booster seats, a child should be between four and eight years old and under four feet nine inches tall. If they are over the height limit, then they can use the vehicle’s seat belt system for protection. In New Mexico, only one state over from Texas, the child must be five or six years old to use a booster. Any child who weighs less than 60 pounds, but more than 40, must also use a booster. So, if you’re taking a road trip to another state, make sure you’re complying with the safety seat requirements for your child. Read each state’s safety seat requirements here.