Booster Seats

Missouri's Child Restraint Law

(RSMo 307.179)

  • Children less than 4 years old or less than 40 pounds must be in an appropriate child safety seat.
  • Children ages 4 through 7 who weigh at least 40 pounds must be in an appropriate child safety seat or booster seat unless they are 80 pounds or 4'9" tall.
  • Children 8 and over or weighing at least 80 pounds or at least 4’9” tall are required to be secured by a safety belt or buckled into an appropriate booster seat.
Spread the Word...

For more information, call the Missouri Department of Transportation at
1-888-Ask-MoDOT.