Each Of these seat belt parts is designed to work in conjunction, ensuring optimal protection during travel. NHTSA has considered these questions and attempted to use plain language rein promulgating this final rule. Please inform the agency if you can suggest how NHTSA can improve its use of plain language. https://zenwriting.net/tellerzipper1/the-greatest-guide-to-federal-motor-vehicle-safety-standard-seat-belt-webbing