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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: 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
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
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
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
What is the annual requirement for employee queries and how is it tracked? FMCSA-D&A-CLEAR-382.701-FAQ001(2023-03-09) Clearinghouse FAQ
How is an employer notified of changes to a driver’s Clearinghouse record? FMCSA-D&A-CLEAR-382.701-FAQ002(2023-03-09) Clearinghouse FAQ
Notice of Enforcement Policy Issued March 8, 2023 (Re Drug & Alcohol Clearinghouse—DUI in a CMV) FMCSA-D&A-CLEAR-NEP(2023-03-08) Clearinghouse Notice of Enforcement Policy
FAQs for Notice of Enforcement Policy Issued March 8, 2023 (Re Drug & Alcohol Clearinghouse—DUI in a CMV) FMCSA-D&A-CLEAR-NEP-FAQS(2023-03-8) Clearinghouse Notice of Enforcement Policy
Are there recommended best practices if a State permits a third party examiner to administer CDL knowledge tests? FMCSA-STCDL-384-FAQ01(2023-02-13) States’ Voluntary Use of Third Party Knowledge Test Examiners