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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
What is considered a ‘‘public road?’’ FMCSA-RG-390.5T-Q026 What is a “public road?”
May a driver who is taking advantage of the 100-air-mile radius exemption in §395.1(e) be intermittently off-duty during the period away from the work-reporting location? FMCSA-HOS-395.1-Q20 Hours of Service Exceptions
When a driver fails to meet the provisions of the 100 air-mile radius exemption (section 395.1(e)), is the driver required to have copies of his/her records of duty status for the previous seven days? FMCSA-HOS-395.1-Q21 Hours of Service
A driver returns to his/her normal work reporting location from a location beyond the 100-air-mile radius and goes off duty for 7 hours. May the driver return to duty after being off-duty for 7 hours and utilize the 100-air-mile radius exemption? FMCSA-HOS-395.1-Q22 Hours of Service Exceptions
Is the exemption contained in §395.1(f) concerning department store deliveries during the period from December 10 to December 25 limited to only drivers employed by department stores? FMCSA-HOS-395.1-Q23 Hours of Service Exceptions
May time spent in sleeping facilities being transported as cargo (e.g., boats, campers, travel trailers) be recorded as sleeper berth time? FMCSA-HOS-395.1-Q24 Hours of Service Exceptions
If an interstate driver gets stopped by a State enforcement officer for an inspection, would the inspecting officer be enforcing the Federal regulations or State regulations? FMCSA-RG-390.9-Q001 Regulations enforced by State officers
Would the accident report retention requirement in §390.15(b)(2) include an ‘‘Adjuster’s Report’’ that is normally considered to be an internal document of an insurance company? FMCSA-RG-390.15-Q002 Retention of insurance “adjuster’s report”
May sleeper berth time and off-duty periods be combined to meet the 10-hour off-duty requirement? FMCSA-HOS-395.1-Q25 Hours of Service Exceptions
May a decal designed to comply with the periodic inspection documentation requirements of § 396.17 be displayed on the windshields or side windows of a CMV? FMCSA-VEH-393.60-Q02 May CVSA decals be displayed on windows?