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What does engine synchronization mean for the purposes of electronic logging device (ELD) compliance?

An ELD must be integrally synchronized with the engine of the commercial motor vehicle (CMV). Engine synchronization means monitoring engine operation to automatically capture the engine power status, vehicle motion status, miles driven, and engine hours.

Did this answer your question? If not, please email ELD@dot.gov or call 1-800-832-5660 for more information.

Last Updated : April 6, 2017
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