Legislation to toughen Kentucky's vehicle booster seat law is moving closer to becoming a reality. The Senate Transportation Committee approved its version of the measure Wednesday. The modification raises the age and height requirement for children riding in vehicles. Louisville Representative Steve Riggs says the Senate revision relates to the age restriction. "My bill was, you had to be less than nine and this changes it to less than eight, which matches most of the other states,” said Riggs. “Only Tennessee is higher and Utah is higher."