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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
Does the definition of a ‘‘commercial motor vehicle’’ in § 390.5T of the FMCSRs include parking lot and/or street sweeping vehicles? FMCSA-RG-390.5T-Q015 Street-sweeping machines as CMVs
May a motor carrier that employs owner-operators who have their own operating authority issued by the ICC or the Surface Transportation Board transfer the responsibility for compliance with the FMCSRs to the owner-operators? FMCSA-RG-390.5T-Q017 Carrier responsibility for owner-operator compliance with FMCSRs
Must a person who is injured in an accident and immediately receives treatment away from the scene of the accident be transported in an ambulance? FMCSA-RG-390.5T-Q018 Mode of transportation of persons injured in CMV accident
What is the meaning of ‘‘immediate’’ as used in the definition of ‘‘accident?’’ FMCSA-RG-390.5T-Q019 Meaning of “immediate” medical treatment after “accident”
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
49 CFR 390.3T General applicability Question 19 --Government Entities FMCSA-RG-390.3T-Q019 Parties not included in the governmental exemption
Part 390 § 390.23 Relief from regulations Question 3 FMCSA-RG-390.23-Q003 Required off-duty time after providing emergency relief
Part 390 § 390.3T General applicability Question 21 FMCSA-RG-390.3T-Q021 Extent of exception for transportation of personal property
Who is responsible for ensuring that medical certifications meet the requirements? FMCSA-MED-391.41-Q1 Driver Physical Qualification Standards
Do the physical qualification requirements of the FMCSRs infringe upon a person’s religious beliefs if such beliefs prohibit being examined by a licensed doctor of medicine or osteopathy? FMCSA-MED-391.41-Q2 Driver Physical Qualification Standards