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Regulatory Guidance

Welcome to the FMCSA Guidance Portal. This web portal is a searchable, indexed database that contains and links to all guidance documents in effect from the Federal Motor Carrier Safety Administration. The guidance documents lack the force and effect of law, unless expressly authorized by statute or incorporated into a contract.

To comment on any guidance document, or to request issuance, reconsideration, modification, or rescission of any guidance document, please identify the guidance document in your request and send it to: FMCSAguidance@dot.gov. NOTE: The FMCSAguidance mailbox is not intended to serve as a mailbox for general inquiries. For inquiries that go beyond the limited purpose of the FMCSAguidance mailbox, please call FMCSA's Information Line (800-832-5660) or visit FMCSA's "Contact Us" page to send your inquiry to the appropriate mailbox.

Subject Agency Identifier Topic Issued Date
If a driver has a drug and alcohol program violation in one State, then applies for a commercial driver’s license (CDL) in another State, will the Clearinghouse be able to connect that driver’s drug and alcohol violation history to the new CDL? FMCSA-D&A-CLEAR-382-FAQ032 Guidance on drivers with drug and alcohol program violations in multiple states
How do authorized users sign up to access the Clearinghouse? FMCSA-D&A-CLEAR-382.711-FAQ003 Guidance on Authorized User Registration
Suspension of Motor Carrier Operating Authority Registration for Invalid Process Agent (BOC-3) Filings (MC-RS-2019-0002) FMCSA-REG-366-SUSPENSION OF OPERATING AUTHORITY REGISTRATION FOR INVALID BOC-3 FILINGS Suspension of Operating Authority Registration for Invalid Process Agent Filings
Crash Preventability Determination Program, 84 FR 38087 FMCSA-FR-84FR38087.2019.08.05 crash preventability
Advisory: Declaring the Transportation of Anhydrous Ammonia and Class 3, Flammable Liquids When Filing FMCSA Registration. FMCSA-HM-ADVISORY.2019.06.05 Hazardous Materials
ELD Carrier-Driver Training FMCSA-HOS-ELD-TRAINING-395-FAQ3 ELD Guidance
ELD Provider Training FMCSA-HOS-ELD-TRAINING-395-FAQ4 ELD Guidance
When must current and prospective employers conduct a query of a CDL driver’s information in the Clearinghouse? FMCSA-D&A-CLEAR-382.701-FAQ008 Guidance on When to Conduct Clearinghouse Queries
How will CDL drivers be notified when information about them is added to the Clearinghouse? FMCSA-D&A-CLEAR-382.707-FAQ001 Guidance on Driver Notification
What actions can CDL drivers take in the Clearinghouse? FMCSA-D&A-CLEAR-382.709-FAQ002 Guidance on what actions CDL drivers can take in the Clearinghouse