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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
How does the HMSP Program Improvement policy affect current HMSP holders who are submitting renewal applications? FMCSA-HM-HMSP-385-FAQ027 Hazardous Materials Safety Permits
May HMSP carriers request a review of their crash data? FMCSA-HM-385-FAQ026 Hazardous Materials Safety Permits
How will FMCSA use SMS data as part of the HMSP review process? FMCSA-HM-HMSP-385-FAQ017 Hazardous Materials Safety Permits
Hazardous Materials Safety Permit (HMSP) Program: Amendment to Enforcement Policy, 80 Fed. Reg. 35253 FMCSA-FR-80FR35253.2015.06.19 Hazardous Materials Safety Permits
Commercial Driver’s License Standards; Regulatory Guidance Concerning the Passenger Endorsement Standards, 80 Fed. Reg. 30163 (May 27, 2015) FMCSA-FR-80FR30163-2015.05.27 Regulatory Guidance
Are crashes involving motorists striking attenuator trucks while the impact attenuators or crash cushions are deployed included within the definition of ‘‘accident’’ with regard to the motor carrier responsible for the operation of the attenuator truck? FMCSA-RG-390.5T-FAQ033 Accidents involving attenuator trucks
Are crashes involving motorists striking attenuator trucks while the impact attenuators or crash cushions are deployed included within the definition of ‘‘accident’’ with regard to the motor carrier responsible for the operation of the attenuator truck? FMCSA-RG-390.5T-FAQ033 Accidents involving attenuator trucks
Testing Pool Inclusions: Can an employer include in the DOT random testing pool non-CDL drivers who operate motor vehicles weighing less than 26,001 pounds? FMCSA-D&A-382.305-FAQ007 Guidance on whether non-DOT covered employees may be placed in the DOT random testing pool.
Requirements While Not Performing Safety-Sensitive Functions: A CDL driver is selected for a random drug test and the employer directs the driver to be tested when he was (off duty) not performing a safety-sensitive function. FMCSA-D&A-382.305-FAQ010 Guidance clarifying that a driver shall only be tested for alcohol while, just before, or just after the driver performs safety-sensitive functions.
Multiple Locations and Random Testing: Can an employer make random drug and alcohol testing selections by terminal if the company has multiple locations? FMCSA-D&A-382.305-FAQ006 Guidance on how to handle the random testing of employees in different locations or terminals.