Q. Where can I find information about speed limit laws?
Speed limits are regulated by each state. If you have questions or comments about the speed limit in your state, please contact your elected federal or state representatives.
What happened to the 55 mph Federal speed limit? provided by the Federal Highway Administration (FHWA)
See Interstate Frequently Asked Questions #13
Maximum posted speed limit listed by state provided by the Insurance Institute for Highway Safety
(Note: The above private-sector site is not maintained by USDOT or any other US Government office. We take no responsibility for the content or accuracy of any non-USDOT web page, and offer the above link strictly as a courtesy, should you be interested.)
Questions? Contact your state level Department of Transportation (DOT)
Can't find the answer you're looking for in the FAQs? Contact a Reference Librarian for help.