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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
§391.2 General exemptions FMCSA-DQ-391.2-Q001 Driver qualification exemptions
May a carrier use a blanket certification of road test for specific vehicles (driver’s names, etc., left out)? FMCSA-DQ-391.31-Q003 Road test
What is meant by the terms "use alcohol" or "alcohol use"? Is observation of use sufficient or is an alcohol test result required? FMCSA-D&A-382.205-Q01 On-duty alcohol use
Question 1: Does §382.603 require employers to provide recurrent training to supervisory personnel? FMCSA-D&A-382.603-Q01 Drug & Alcohol Testing – Training for Supervisors
What kinds of oilfield equipment may drivers operate while taking advantage of the special rule of Section 395.1(d)(2)? FMCSA-HOS-395.1-Q08 Hours of Service Exceptions
How does a driver record the hours spent driving in a school bus operation when he/she also drives a commercial motor vehicle (CMV) for a company subject to the Federal Motor Carrier Safety Regulations (FMCSRs)? FMCSA-HOS-395.2-Q21 Hours of Service Definitions
Are tractor protection valves required by § 393.43(b), or may similar devices be used? FMCSA-VEH-393.43-Q01 Are tractor protection valves required?
Must an SAP evaluation be conducted in person or may it be conducted telephonically? FMCSA-D&A-382.605-Q1 Controlled Substances and Alcohol Use and Testing, Referral, Evaluation, Treatment
Must drivers, alternating between interstate and intrastate commerce, record their intrastate driving time on their record of duty status? FMCSA-HOS-395.8-Q04 Hours of Service Records of Duty Status
If a company owns more than one motor carrier subject to the Federal Motor Carrier Safety Regulations, may the company use logs listing the names of all such motor carrier employers and require the driver to identify the carrier for which he or she drives FMCSA-HOS-395.8-Q18 Hours of Service Records of Duty Status