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.

• Federal Aviation Administration (FAA)
• Federal Highway Administration (FHWA)
• Federal Motor Carrier Safety Administration (FMCSA)
• Federal Railroad Administration (FRA)
• Federal Transit Administration (FTA)
• Maritime Administration (MARAD)
• National Highway Traffic Safety Administration (NHTSA)
• Pipeline and Hazardous Materials Safety Administration (PHMSA)
• Great Lakes St. Lawrence Seaway Development Corporation: no applicable documents
• Office of the Secretary of Transportation (OST)