An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Section § 393.70: Coupling devices and towing methods, except for driveaway-towaway operations.
Guidance Q&AQuestion 1: Is there a minimum number of fasteners required to fasten the upper fifth wheel plate to the frame of a trailer?
Guidance: The FMCSRs do not...
Section § 393.67: Liquid fuel tanks.
Guidance Q&AQuestion 3: What standards under the FMCSRs must be met when a liquid fuel tank is repaired or replaced?
Guidance: A replacement/repaired tank must meet the applicable standards in § 393.67.
NOTE: This guidance reflects minor correction(s) (e.g., for grammar, typographical errors, or consistency) made on March 10, 2022.
FMCSA-HOS-ELD-TECH-395-FAQ64(2017-11-07)-CORR1
Question: What information must be displayed...
Section § 393.67: Liquid fuel tanks.
Guidance Q&AQuestion 2: Do the FMCSRs specify a particular pressure relief system?
Guidance: No, but the performance standards of § 393.67(d) must be met.
Section § 393.67: Liquid fuel tanks.
Guidance Q&AQuestion 1: May a properly vented fuel cap be used on a fuel tank equipped with another fuel venting system?
Guidance: Yes (see § 393.3).
Advisory: Guidance on the Application of 49 CFR Section 385.403; Who Must Hold a Safety Permit?
The Federal Motor Carrier Safety Administration (FMCSA) is issuing this advisory to motor carriers and shippers of hazardous materials requiring a Hazardous Materials Safety...
Section § 393.65: All fuel systems.
Guidance Q&AQuestion 2: Must a motor vehicle that meets the definition of a ‘‘commercial motor vehicle’’ in § 390.5 because it transports hazardous materials in a quantity requiring placarding under the Hazardous Materials Regulations (49...
NOTE: This guidance reflects minor correction(s) (e.g., for grammar, typographical errors, or consistency) made on March 10, 2022.
FMCSA-HOS-ELD-TECH-395-FAQ63(2017-09-01)-CORR1
Question: When is the...
Medical Qualification FAQ – FOREIGN Medical certificate – FAQ2
Description: FAQ
FAQ2: I operate a CMV in the United States but reside outside of the United States. Can I use my foreign medical certificate?
A2: ...
FAQ 29: How will future changes to the CSA Program impact the HMSP Program?
Answer: On June 29th, 2015, FMCSA published a Federal Register notice (Vol. 80 FR 37037), Proposal for Future Enhancements to the Safety Measurement System (SMS)” for public
comment. Any finalized...