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: 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
Do the FMCSRs require State Driver Licensing Agencies to query the Clearinghouse before initiating a licensing action to remove a restriction that would expand the driver’s ability to operate CMVs or when issuing a duplicate CLP or CDL? FMCSA-CDL-383.73-FAQ01(2024-05-20) Drug and Alcohol Clearinghouse Checks Before Issuance of CLP or CDL
Cross Border Transportation FAQs FMCSA-ELD-Cross-Border-Transportation-FAQs(2023-03-08) ELD Guidance
Qualifications of Drivers: Medical Examiner’s Handbook Regulatory Guidance, 88 FR 3892 (January 22, 2024) FMCSA-FR-88FR3892(2024-01-22) Driver Physical Qualification Examination and Standards
Medical Examiner’s Handbook 2024 Edition FMCSA-MED-MEH(2024-01-22) Driver Physical Qualification Examination and Standards
Qualifications of Drivers: Medical Advisory Criteria, 89 Fed. Reg. 3577 (Jan. 19, 2024) FMCSA-FR-89FR3577(2024-01-19) Driver Physical Qualification Examination and Standards
Can ELD data be cached to a black box, gateway, or server, and written to an ELD event at a later time? FMCSA-ELD-395-Q085(2023-07-31) ELD Guidance
In an electronic logging device (ELD) with multiple components, which component must generate the event sequence identifier number? FMCSA-ELD-395-Q080(2023-07-31) ELD Guidance
Can a user edit or change automatically recorded driving time that has been recorded by an electronic logging device (ELD) to non-driving time? FMCSA-HOS-ELD-395-FAQ51(2023-07-31) ELD Guidance
What duty status change events must be included in the ELD output file for submission to FMCSA during an inspection, investigation, or audit? FMCSA-ELD-395-Q084(2023-07-31) ELD Guidance
May a State Driver’s Licensing Agency (SDLA) issue a non-domiciled CLP or CDL to an individual who is present in the United States under the Deferred Action for Childhood Arrivals (DACA) immigration policy as a citizen of Mexico? FMCSA-CDL-383.23-FAQ001(2023-05-08) Commercial Driver’s License Standards; Non-domiciled Commercial Learner’s Permits and Commercial Driver’s Licenses