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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
A company has a truck with a GVWR under 10,001 pounds towing a trailer with a GVWR under 10,001 pounds. However, the GVWR of the truck added to the GVWR of the trailer is greater than 10,001 pounds. Would the company operating this vehicle in interstate c FMCSA-RG-390.5T-Q011 Applicability of FMCSRs to combination vehicles with individual GVWs under 10,001 pounds, but GCWRs above 10,001 pounds
If a driver submits an application for employment and has someone else type, write, or print the answers to the questions for him and he signs the application, does this constitute a valid application? FMCSA-DQ-391.21-Q001 Driver application for employment
Are employers still required to administer road tests since all States have implemented CDL skills testing? FMCSA-DQ-391.31-Q001 Road test
If, after December 18, 1995, a Mexico-based driver is found operating beyond the boundaries of the four border States allowed by the North American Free Trade Agreement (NAFTA), is that driver in violation of the FMCSRs? If so, which one? FMCSA-RG-390.3T-Q022 Mexico-NAFTA
What is the meaning of ‘‘immediate’’ as used in the definition of ‘‘accident?’’ FMCSA-RG-390.5T-Q019 Meaning of “immediate” medical treatment after “accident”
Are intrastate drivers of Commercial Motor Vehicle (CMV)s, who are required to obtain CDLs, required to be alcohol and drug tested by their employer? FMCSA-D&A-382.103-Q01 Applicability of part 382 to intrastate drivers
Is it intended that the words “person” and “driver” be used interchangeably in §391.45? FMCSA-MED-391.45-Q1 Driver Physical Qualification Examination
In a governmental entity structured into various subunits such as departments, divisions, and offices, how is the number of an employer’s drivers determined for purposes of the implementation date of controlled substances and alcohol testing? FMCSA-D&A-382.115-Q01 Implementation of drug and alcohol testing program for governmental units that employ CDL drivers
Question 2: Does §382.601 require employers to provide educational materials and policies and procedures to drivers after the initial distribution of required educational materials? FMCSA-D&A-382.601-Q02 Drug & Alcohol Testing – Educational Materials on Alcohol Misuse and Controlled Substances Use
Must all trailers be equipped with overload protective devices? FMCSA-VEH-393.28-Q02 Overload protective devices for trailers