FMCSA-ELD-395-Q034(2022-03-10)

Question: Can a mobile app and the vehicle engine communicate over a cellular network?

Guidance: The ELD rule does not prohibit this type of communication. However, manufacturers should keep in mind that in places without coverage, and without cellular communication, the device may not be able to record or display records of duty status (RODS), which would leave the driver not current to the last duty status change or operating without logs—a violation of the Hours of Service rules.

Contact Info: FMCSA ELD Information, 1-800-832-5660 or ELD@dot.gov.

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Note: This guidance document does not have the force and effect of law and is not meant to bind the public in any way.  It is intended only to provide information and clarity regarding existing requirements under the law or agency policies.