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Booster seats are required in Ontario for children weighing 8-36 kg (40-80 lb).

Child Safety Seats

Driving law aims to protect children

Car crashes are the number one cause of death for Canadian children. However, a properly installed car seat can reduce the risk of serious injury or death by as much as 75%.

On Sept. 1, 2005, it became mandatory for anyone transporting children in a vehicle in the province of Ontario to make sure the children are properly secured in either an infant seat, child seat or booster seat (booster seals are a new addition to the law).

This law applies to all caregivers, from babysitters and nannies to grandparents and friends.

Rear-facing infant car seats are required for infants weighing 9 kg (20 lb) or less. Forward-facing child car seats are required for children weighing between 9 kg and 18 kg (20 to 40 lb) -- children about one year of age and up.

Booster seats now are required for children under the age of eight weighing more than 18 kg but less than 36 kg (40-80 lb) and who stand less than 145 cm (4 ft 9 in. or 57 in.) tall. Booster seats will provide about 60% more protection than seat belts alone for children in the four to eight age group, often called 'the forgotten children' regarding child restraints in vehicles.

A child can start using a seatbelt alone once any one of the following criteria is met: the child turns eight years old, the child weighs 36 kg (80 lb), or the child is 145 cm (4 feet 9 inches) tall.

Drivers are responsible for ensuring passengers under 16 years of age are properly secured. Children under 13 years of age are safest in the rear seat of a vehicle, away from active airbags. Drivers who fail to use booster or child car seats, or who use them incorrectly, face two demerit points plus a $110 fine. Booster seats cost between $30 and $160. Ontario no longer collects PST on booster seats. Child and infant seats are already PST-exempt.

Parents and caregivers can get more information about how to properly install child car seats or booster seats by attending a child car seat inspection clinic in their area. For details on upcoming clinics, visit

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