Seat Belt Law, Child Safety Seats and Child Restraint Systems. Get resources on how to find and install the right car seat for your child such as forward-facing and rear-facing car seats, along with booster seats.PennDOT cares about protecting our children and encourages all adults to take the responsibility of keeping them safe when riding in a vehicle. All children under 8 must be buckled into a federally-approved child restraint system when riding in a car. Can I Use a Car Seat or Booster Seats in TLC-Licensed Vehicles? Do you need a car seat or a booster for your child? In the United States, all states require children to be secured in a car seat or booster seat until they reach certain height or weight requirements. The law states that children under the age of four must be secured in a system that is appropriate for their height and weight. Under New York State's Child Restraint Law, a child must remain in an appropriate child restraint system while riding in a motor vehicle until the age of eight. In addition, a number of NYC car services provide car seats and booster seats upon request.