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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
Can an employee who has violated the rules return to safety-sensitive functions prior to receiving an SAP evaluation? FMCSA-D&A-382.605-Q7 Returning to Duty Before SAP Evaluation
May a large corporation which has many wholly-owned subsidiaries have one policy of insurance for the parent corporation and maintain the policy and Form MCS-90B at the corporate headquarters? FMCSA-INS-387.31-Q001 Need for large corporation with many subsidiaries to have more than one insurance policy
How would the DVIR requirements apply to a driver who works two or more shifts in a single calendar day? FMCSA-VM-396.11-Q024 Driver vehicle inspection reports
Question 9: Is a State required to accept the periodic inspection program of another State having a periodic inspection program meeting minimum FMCSA standards as contained in appendix G to the FMCSRs? FMCSA-VM-396.17-Q09.cm Federally-approved State inspections must be accepted by all other States
Is the financial responsibility requirement met when an owner-operator (lessor) provides the motor carrier (lessee) a copy of the policy and Form MCS-90 where the carrier is named as an additional insured to the policy (Form MCS-90)? FMCSA-INS-387.7-Q004 Compliance with financial responsibility requirements where carrier leases vehicle from owner operator
Is the use of a facsimile signature (e.g., printed, stamped, autopenned, etc.) on the Form MCS-90B endorsement acceptable? FMCSA-INS-387.39-Q003 Describe Contents of Document
If a vehicle with a manufacturer’s GVWR of less than 10,001 pounds has been structurally modified to carry a heavier load, may an enforcement officer use the higher actual gross weight of the vehicle, instead of the GVWR, to determine the applicability of FMCSA-RG-390.5T-Q004 Applicability of FMCSRs to vehicle modified to carry heavier loads
If a driver is convicted of one of the specified offenses in §391.15(c), but is allowed to retain his driver’s license, is he/she still disqualified? FMCSA-DQ-391.15-Q007 Driver disqualification
What markings must be displayed on a CMV when used by two or more motor carriers? FMCSA-RG-390.21-Q001 Marking of CMVs used by multiple carriers
Question 2: Are motorcoach passengers required to wear seat belts? FMCSA-DRV-392.16-Q002 Use of seat belts