What feature is NOT a requirement for children in vehicles?

The requirement regarding children in vehicles is primarily centered around safety measures designed to protect them in the event of a crash. One key aspect of these safety measures is that children must either use an appropriate seatbelt or be secured in an approved child restraint device, such as a car seat or booster seat. The laws generally mandate that children should occupy the back seat, particularly if they’re younger and, indeed, those younger than a certain age or weight need to be in these child restraints.

The option that states being over 10 years old is not a requirement reflects the fact that different states have varying laws concerning the age at which a child can safely transition from a child restraint to an adult seatbelt. In Arizona, for instance, while there are recommendations, there is no hard requirement that children must be over a specific age in order to ride in a vehicle without a child restraint, as long as they meet the other criteria set forth by the law. This means that children can still safely be transported in vehicles even if they are under 10 years old, provided they are correctly restrained as per the regulations.