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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
Is an employer required to conduct a pre-employment query of the Clearinghouse for a driver-applicant subject to 49 CFR Part 382 before administering a road test in accordance with 49 CFR 391.31? FMCSA-D&A-CLEAR-382.701-FAQ010(2022-01-27) Controlled Substances and Alcohol Use and Testing
How will State Driver Licensing Agencies (SDLAs) use the Clearinghouse? FMCSA-D&A-CLEAR-382.725-FAQ001(2022-01-27) Controlled Substances and Alcohol Testing: State Driver’s Licensing Agency Non-Issuance/ Downgrade of Commercial Driver’s License
What are the physical qualification requirements for operating a CMV in interstate commerce? FMCSA-MED-391.41-Q3(2022-01-21) Driver Physical Qualification Standards
Qualifications of Drivers; Vision Standard, 87 FR 3390 (Jan. 21, 2022) FMCSA-FR-87FR3390(2022-01-21) Driver Physical Qualification Standard for Vision
Is a motor carrier that is subject to Part 382 allowed to query the Drug and Alcohol Clearinghouse (Clearinghouse) for drivers who hold a commercial driver’s license (CDL) but who are operating only non-CDL-required commercial motor vehicles (CMVs) in ... FMCSA-D&A-CLEAR-382.701-FAQ009 Drug and Alcohol Clearinghouse
How do FMCSA’s ELDT regulations affect State-based training requirements? FMCSA-ELDT-380-Q027 Entry level Driver Training
Does the 30-minute break count against the 14-hour “driving window”? FMCSA-HOS-2020-395-FAQ18 Hours of Service
May a driver use yard moves to satisfy the 30-minute break requirement? FMCSA-HOS-2020-395-FAQ20 Hours of Service
Are drivers required to annotate an adverse driving condition they encountered on their electronic logging device (ELD)? FMCSA-HOS-2020-395-FAQ15 Hours of Service
Does the 30-minute break have to be consecutive? FMCSA-HOS-2020-395-FAQ17 Hours of Service