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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
Are the requirements of § 393.100 the only cargo securement requirements motor carriers must comply with? FMCSA-VEH-393.100-Q01 What cargo securement requirements must carriers meet?
Are employers required to provide intervention and treatment for drivers who have a substance abuse problem or only refer drivers to be evaluated by an SAP? FMCSA-D&A-382.605-Q2 Guidance on Providing Treatment for Substance Abuse
Question 19: Who is responsible for retaining DVIRs for leased vehicles including those of owner-operators? FMCSA-VM-396.11-Q019 Driver vehicle inspection reports
Is a motor carrier transporting mail under contract for the U.S. Postal Service wholly within the boundaries of a single State subject to the minimum levels of financial responsibility requirements of part 387? FMCSA-INS-387.3-Q006 Applicability of Financial Responsibility Regulations to Single State Mail transport
Must a motor carrier obtain a new Form MCS-90 each year if it retains the same insurance company? FMCSA-INS-387.15-Q004 Need for new MCS-90 if carrier retains insurance company
Are the FMCSRs applicable to drivers/vehicles operated by a transit authority owned and operated by a State or a political subdivision of the State? FMCSA-RG-390.3T-Q010 Applicability of FMCSRs to State or local transit agencies
§391.2 General exemptions. FMCSA-DQ-391.2-Q002 Driver qualification exemptions
A person involved in an incident discovers that he or she is injured after leaving the scene of the incident and receives medical attention at that time. Does the incident meet the definition of accident in 49 CFR 390.5T? FMCSA-RG-390.5T-Q020 Injury discovered after leaving scene of accident
What alcohol and drug testing provisions apply to foreign drivers employed by foreign motor carriers? FMCSA-D&A-382.103-Q09 Applicability of Section 382.105
Question 2: May an employer accept proof of supervisory training for a supervisor from another employer? FMCSA-D&A-382.603-Q02 Drug & Alcohol Testing – Proof of Supervisory Training