Ohio is the newest state to adopt a booster seat law to protect kids who have outgrown a harnessed car seat but are not yet ready for an adult seatbelt. Real life crash data has shown that kids in the four to seven age range are not well protected by adult seatbelts alone. Ohio's new booster seat law is pretty standard - kids ages four through seven who are less than 4'9" tall must ride in a federally approved booster seat.

The law goes into effect on April 6, 2009. There are now fewer than ten U.S. states that do not have a booster seat law.

• State Car Seat Laws