http://cullen-hemphill.com. Winter Park, Florida personal injury attorney Kim Cullen explains Florida’s new child safety seat law that became effective on January 1, 2015. The new law applies to children aged 4 and 5, and requires parents to use car seats or booster seats instead of simply seat belts. Cullen & Hemphill, PLC is committed to safety of Florida’s families. If you have any questions regarding child car seats or any other car safety feature call us at 407-254-4901.