What is a suitable restraint system for a child three years old?

For a three-year-old child, a suitable restraint system is a forward-facing car seat with a five-point harness. This type of seat provides better protection in the event of a collision, as it securely holds the child in place. It’s essential to ensure the car seat is properly installed and used according to the manufacturer's guidelines. Additionally, children should remain in a car seat until they reach the maximum height or weight limit specified by the car seat manufacturer.