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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
May a driver domiciled in the United States comply with the Canadian hours of service regulations while driving in Canada? FMCSA-HOS-395.3-Q05 Hours of Service Maximum Driving Time
Do Canadian Provincial inspections meet FMCSA standards? FMCSA-VM-396.17-Q10.cm Do Canadian Provincial inspections meet FMCSA standards?
Question 2: Is there a specific form or format to be used in ensuring that inspectors are qualified in accordance with § 396.19? FMCSA-VM-396.19-Q02.cm Is there an inspector qualification form?
Question 3: Who has the responsibility of inspecting and maintaining leased vehicles and their maintenance records? FMCSA-VM-396.3-Q003 Vehicle inspection, repair and maintenance
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
Do the disqualification provisions of §391.15 apply to offenses committed by a driver who is using a company vehicle for personal reasons while off-duty? FMCSA-DQ-391.15-Q005 Driver disqualification
A driver used by a motor carrier operates a CMV to and from his/her residence out of State. Is this considered interstate commerce? FMCSA-RG-390.5T-Q005 Extent of “interstate commerce” when applied to personal conveyance
Section 390.23 provides that parts 390 through 399 do not apply to any motor carrier or driver operating a CMV to provide direct assistance in an emergency. Is a motor carrier or driver required to keep a record of the driver’s on-duty or driving time whi FMCSA-RG-390.23-Q002 Driver recordkeeping while providing assistance in an emergency
May a urine sample collected for purposes of performing a controlled substances and alcohol test be used to test for diabetes as part of a driver’s FMCSA-required physical examination? FMCSA-MED-391.43-Q2 Driver Physical Qualification Examination
Particularly in light of the coverage of Canadian and Mexican employees, how should Medical Review Officers (MRO) deal, in the verification process, with claims of the use of foreign prescriptions or over-the-counter medication? FMCSA-D&A-382.105-Q04 Applicability of Section 382.105