USA Banner

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.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

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
How do authorized users sign up to access the Clearinghouse? FMCSA-D&A-CLEAR-382.711-FAQ003 Guidance on Authorized User Registration
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
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
Will a driver’s follow-up testing plan be available in the Clearinghouse? FMCSA-D&A-CLEAR-382-FAQ020 Guidance clarifying that follow testing plans are not available in the Clearinghouse
Do employers have access to violation information regarding current employees, including violations recorded by a different employer? FMCSA-D&A-CLEAR-382.703-FAQ004 Guidance on Employer Access to DAC Information
What information is an employer required to report to the Clearinghouse when reporting actual knowledge that a CDL driver used alcohol or controlled substance, as defined in § 382.107? FMCSA-D&A-CLEAR-382.705-FAQ001 Guidance on reporting actual knowledge violations to the Clearinghouse