Search and read official NHTSA interpretation letters that explain federal vehicle safety laws and standards. Submit your own requests for legal guidance.
The NHTSA Interpretation File Search lets you look up official letters from the National Highway Traffic Safety Administration’s Chief Counsel. These letters explain how federal vehicle safety laws and standards apply to specific situations, providing helpful guidance for manufacturers, legal professionals, and the general public.
You can easily search through a collection of interpretation letters to better understand how NHTSA interprets its rules. If you have a unique question, you can even submit a request for your own interpretation through the site. The responses are meant to clarify, not legally bind, but they’re a valuable resource for anyone needing insight into auto safety regulations.
Whether you’re researching compliance, preparing for a project, or just curious about vehicle laws, this site makes it simple to find clear, official explanations directly from the agency responsible for road safety in the U.S.
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