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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
Why is there a reference to the internet in Bluetooth® transfer when it is part of the local transfer option? FMCSA-HOS-ELD-TECH-395-FAQ79(2017-09-01)-CORR1 ELD Guidance
Is the electronic logging device (ELD) required to encrypt files during a USB electronic data transfer? FMCSA-HOS-ELD-TECH-395-FAQ80(2017-09-01)-CORR1 ELD Guidance
When an existing record becomes inactive and its replacement record becomes active or inactive‐ change‐requested, is it acceptable that the replacement record has the same sequence ID as the record it replaces? FMCSA-HOS-ELD-TECH-395-FAQ29 Electronic Logging Devices and Hours of Service – Technical Specifications
Can an electronic logging device (ELD) connect to the electronic control module (ECM) in a manner that relies on internet, Bluetooth® or another method of connectivity? FMCSA-HOS-ELD-TECH-395-FAQ82(2017-09-01)-CORR1 ELD Guidance
What Hazardous Materials require a Hazardous Materials Safety Permit? FMCSA-HM-HMSP-385-FAQ004 Hazardous Materials Safety Permits
Is Anhydrous Ammonia covered under the Hazardous Materials Safety Permit Program? FMCSA-HM-HMSP-385-FAQ005 Hazardous Materials Safety Permits
Why does an ELD provider need to submit a public key? FMCSA-HOS-ELD-TECH-395-FAQ97 ELD Guidance
Regulatory Guidance Concerning the Issuance of Commercial Learner’s Permits FMCSA-FR-82FR36101.2017.08.03 Issuance of Commercial Learner’s Permits
Crash Preventability Demonstration Program, 82 FR 35045 FMCSA-FR-82FR35045.2017.07.27 crash preventability
Regulatory Guidance on Reporting Accidents Involving Fires FMCSA-FR-72FR40250-2007.07.24 Accident Reporting; Safety Fitness