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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
Would it be acceptable for the data transfer to be initiated by the electronic logging device (ELD) but relayed through and communicated to the Federal Motor Carrier Safety Administration (FMCSA) Service from the provider’s backend? FMCSA-HOS-ELD-TECH-395-FAQ66(2017-09-01)-CORR1 ELD Guidance
If a multi-function portable device is used for the front end of the electronic logging device (ELD) (i.e., user may be in a global positioning system [GPS] application and need to switch back to the ELD application), does this count as a click in the... FMCSA-HOS-ELD-TECH-395-FAQ67(2017-09-01)-CORR1 ELD Guidance
Will the Federal Motor Carrier Safety Administration (FMCSA) collect State enforcement agency data transfer capabilities/preferences? FMCSA-HOS-ELD-TECH-395-FAQ68(2017-09-01)-CORR1 ELD Guidance
Is it necessary for drivers to enter their user credentials before starting the data transfer process? FMCSA-HOS-ELD-TECH-395-FAQ69(2017-09-01)-CORR1 ELD Guidance
As specified in section 4.8.2.1.1 of 49 CFR part 395, subpart B, Appendix A, the electronic logging device (ELD) output file must have one line for co-driver information and one line for commercial motor vehicle (CMV) information. How can the ELD... FMCSA-HOS-ELD-TECH-395-FAQ70(2017-09-01)-CORR1 ELD Guidance
If a driver operates with multiple commercial motor vehicles (CMVs), which CMV’s records must be included in the ELD file? FMCSA-HOS-ELD-TECH-395-FAQ71(2017-09-01)-CORR1 ELD Guidance
ELD FAQ 72: Electronic Logging Devices and Hours of Service – Technical Specifications FMCSA-HOS-ELD-TECH-395-FAQ72 ELD Guidance
ELD FAQ 73: Electronic Logging Devices and Hours of Service – Technical Specifications FMCSA-HOS-ELD-TECH-395-FAQ73-RESCINDED ELD Guidance
For ELD Event Annotations or Comments records in sections 4.8.2.1.5 (ELD Data File) of 49 CFR part 395, subpart B, Appendix A, what do the <{Event} Date> and <{Event} Time> refer to? FMCSA-HOS-ELD-TECH-395-FAQ75(2017-09-01)-CORR1 ELD Guidance
Regarding section 4.8.2.1.9 of 49 CFR part 395, subpart B, Appendix A, which power up and shut down events should be included? FMCSA-HOS-ELD-TECH-395-FAQ76(2017-09-01)-CORR1 ELD Guidance