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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
Question 2: May the certificate of qualification as prescribed by §391.65 be incorporated into another carrier’s forms such as a lease and/or interchange agreement? FMCSA-DQ-391.65-Q002 Drivers furnished by other motor carriers
Question 2: Can a motor carrier, which finds a driver with a detectable presence of alcohol, place him/her out of service in accordance with §392.5? FMCSA-DRV-392.5-Q002 Alcohol prohibition
Question 4: Is there a requirement that a driver must personally load, block, brace, and tie down the cargo on the property carrying CMV he/she drives? FMCSA-DRV-392.9-Q004 inspection, cargo, securement
May an operation that changes its normal work-reporting location on an intermittent basis utilize the 100-air-mile radius exemption? FMCSA-HOS-395.1-Q15 Hours of Service Exceptions
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”
Question 14: If a company has several employees in follow-up testing, can those employees be placed into a follow-up random testing pool and selected for follow-up testing on a random basis? FMCSA-D&A-382.605-Q14 Drug & Alcohol Testing – Follow-up Testing
May the driver combine the two sleeper berth periods to meet the required 10 consecutive hours of off-duty time per §395.1(g), then drive for up to 11 more hours? FMCSA-HOS-395.1-Q27 Hours of Service Exceptions
A motor carrier relieves a driver from duty. What is a suitable facility for resting? FMCSA-HOS-395.2-Q22 Hours of Service Definitions
May a properly vented fuel cap be used on a fuel tank equipped with another fuel venting system? FMCSA-VEH-393.67-Q01 Topic: Use of vented fuel cap in addition to other fuel system
If a CMV, other than a motor coach, is equipped with a passenger seat, is a seat belt required for the passenger seat? FMCSA-VEH-393.93-Q01 Seat belt for truck passenger seats