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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 medical review officer (MRO) changes a verified positive drug test result per 49 CFR Part 40, when must the MRO submit the change to the Clearinghouse? FMCSA-D&A-CLEAR-382.705-FAQ007 Guidance on when an MRO must report a changed result to the Clearinghouse
May an employer authorize a consortium/third-party administrator (C/TPA) to conduct queries and/or report violations in the Clearinghouse on their behalf? FMCSA-D&A-CLEAR-382-FAQ012 Guidance on the functions a C/TPA may perform on behalf of an employer in Clearinghouse
When are drivers subject to the DOT Drug and Alcohol testing requirements? FMCSA-D&A-382.103-FAQ003 Guidance on when a driver is subject to the FMCSA drug and alcohol testing requirements.
ELD Training Checklist for Motor Carriers: Understanding Your Device FMCSA-HOS-ELD-TRAINING-395-FAQ1 ELD Guidance
Brochure provides overview of the hours-of-service rules for drivers of passenger-carrying commercial motor vehicles. FMCSA-HOS-PASS-395-PASSENGER CARRIER HOURS OF SERVICE BROCHURE Passenger Carrier Hours of Service
May the CDL knowledge test be administered by a third party? FMCSA-CDL-383.75-Q01-RESCINDED Commercial Driver License Standards; Third Party Testing
Commercial Driver's License Standards, Requirements and Penalties; Notification of Updated Regulatory Guidance; Request for Comments, 84 Fed. Reg. 8464 FMCSA-FR-84FR8464-2019-03-08 Guidance for Commercial Drivers Licenses
§380.603 – Applicability Guidance Q&A Question 2: Who is exempt from entry-level driver training (ELDT) requirements? FMCSA-ELDT-380.603-Q002 Commercial Driver License; Entry level Driver Training
If a CDL holder commits an offense that would normally be disqualifying, but the CDL holder is driving under the farm waiver in § 383.3(d)(1), must the conviction result in a disqualification and action against the CDL holder? FMCSA-CDL-383.51-Gen-Q05 Commercial Driver License Standards; Farm Waiver Disqualification
§380.605 – Definitions Guidance Q&A Question 10: What types of entities can apply to be listed on the Training Provider Registry? FMCSA-ELDT-380.605-Q010 Commercial Driver License; Entry level Driver Training