Check and pull the seat belt as tight as possible and, if using a continuous motion lap and shoulder belt, apply the seat belt locking clip. The laws regarding how long children should use a special car seat restraint system are based primarily on weight and may vary from province to province. In Alberta, for example, the law requires that children under 40 lbs or six years of age must be restrained in a child safety seat. After that they can use a regular car seat belt. Booster seats are recommended for children between 40 and 60 lbs in order to make the seat belt fit properly.
Children behave better in car seats.
They also sleep better and are less prone to car sickness. The latest Transport Canada survey of car seat usage reveals that less than half of the parents using children's car seats are actually following the directions correctly. Unintentional misuse can put a child at risk of injury or death each time they ride in the car. Mistakes Using seats that are not met to be used in a car. They have not been approved for use in cars.