Car Seat Safety-San Angelo News by: Erin Bailey Posted: Mar 18, 2018 / 08:25 PM CDT / Updated: Mar 18, 2018 / 08:25 PM CDT The Texas State Laws state that your child must be in a booster seat until they reach the height of 4’9″. Erin Talked with Safe Kids San Angelo and TxDot to learn about their car seat safety programs.