As a parent, grandparent or guardian, you want to make sure children are safe when you're in the driver's seat. Among the most important steps you can take is installing a car seat properly.
If your car seat is held in place using the car's seatbelts:
Want to make sure you're getting it right? Check out the owner's manual for both the car seat and car before beginning the installation process.
The LATCH system was designed to make car seat installation easier. Anchors are small metal bars easily visible in the backseat of many vehicles, while tethers (or LATCH straps) now come on many car seats to attach the seats to the anchors. If you have a LATCH system in your car and on your car seat:
As a side note, rear-facing car seats are the safest for infants and small children as they provide extra protection for their head, neck and spinal cord.
In the event of an accident, a young child too big for a car seat but too small for an adult seat belt can actually be injured without the protection of a booster seat, which raises their position and helps them better fit into an adult seat belt.
Keep your child in their car seat or booster seat until they reach the height and weight maximums. What's more, keep them in the backseat until they are at least 12.
Sources