How old does a child have to be ride in booster seat Washington?

In Washington state, children must ride in a booster seat until they are at least 4'9" tall OR 8 years old.

It's important to remember that even if a child meets the height requirement, they may still need a booster seat if they haven't outgrown the seatbelt.

Here's a breakdown of Washington's car seat laws:

* Under 1 year old: Must be in a rear-facing car seat.

* 1 year old to 40 pounds: Must be in a rear-facing car seat, unless they've outgrown the weight or height limit of the seat.

* 40 pounds and under 8 years old: Must be in a forward-facing car seat with a harness, or a booster seat.

* 8 years old and under 4'9" tall: Must be in a booster seat.

* 4'9" tall and older: May ride with a seatbelt.

Always consult the car seat manufacturer's instructions for proper installation and use.