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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
How does a student enrolled in a driver training school comply with the requirement to pass a road test? FMCSA-DQ-391.31-Q002 Road test
Question 2: Does the FMCSA have authority to enforce the safe loading requirements against a shipper that is not the motor carrier? FMCSA-DRV-392.9-Q002 Inspection of cargo and cargo securement
Do refrigeration units on tractor-trailer combinations fall within the exemption listed in part 325, subpart A of the Federal Motor Carrier Safety Regulations? FMCSA-NOISE-325.1-Q002 Motor Carrier Noise Emission Standards
Does the government exception in §390.3T(f)(2) apply to motor carriers doing business with the government? FMCSA-RG-390.3T-Q001 Government Exception application
Are the FMCSRs applicable to drivers and CMVs which transport tools, equipment, and supplies across State lines in a CMV? FMCSA-RG-390.3T-Q002 Applicability of FMCSRs to work trucks
Are the operations of a church which provides bus tours to the general public for compensation subject to the FMCSRs as a for-hire motor carrier? FMCSA-RG-390.3T-Q003 Commercial bus tours provided by church
Are the FMCSRs applicable to the rail movement of trailers and intermodal container chassis that previously or subsequently were moved by highway by a motor carrier in interstate commerce? FMCSA-RG-390.3T-Q004 Applicability of FMCSRs to rail movements of intermodal chassis
Are personnel involved in road testing CMVs across a State line subject to the FMCSRs? FMCSA-RG-390.3T-Q005 Applicability of FMCSRs to persons road testing CMVs
How does one distinguish between intra- and interstate commerce for the purposes of applicability of the FMCSRs? FMCSA-RG-390.3T-Q006 Interstate v. intrastate commerce
Are Red Cross vehicles/drivers subject to the FMCSRs? FMCSA-RG-390.3T-Q007 Applicability of FMCSRs to Red Cross vehicles