Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The latest general information on the Coronavirus Disease 2019 (COVID-19) is available on Coronavirus.gov. For USDOT specific COVID-19 resources, please visit our page.

Operating Administration Guidance Portals

Please use these links to read and search for guidance documents issued by DOT’s operating administrations.

The guidance documents contained herein lack the force and effect of law, unless expressly authorized by statute or incorporated into a contract.  DOT may not cite, use, or rely on any guidance that is not available through this guidance portal, except to establish historical facts.

Last updated: Wednesday, September 1, 2021