Child Restraint systems other than harnesses, restraints designed for use by children with physical disabilities, school bus child restraint systems, and booster seats For the reasons discussed above, NHTSA is denying Cybex's request to provide guidance on how FMVSS No. 213a's test procedures apply to deployable side impact technology. 213 https://www.metooo.es/u/67bc3a323db3e71604188c2f