Choosing a is one of the safest and surest ways to avoid impaired driving deaths.

Choosing a seat belt is one of the safest and surest ways to avoid impaired driving deaths

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If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.