Final answer:
Manitoba law requires a child to use a booster seat once they exceed the height and weight limits for a forward-facing car seat.
Step-by-step explanation:
Once a child exceeds the height and weight limits for a forward-facing car seat, Manitoba law requires them to be in a booster seat until they are at least 145 cm (4' 9"), 36 kg (80 lb.) or nine years old.
A booster seat is used to elevate a child to the height necessary for proper seat belt use. It helps position the seat belt across the strongest parts of the child's body and reduces the risk of injury in a car accident.
Booster seats are designed to be used in combination with the vehicle's seat belts and are not meant to be used with the harness system used in infant or convertible seats.