Differences between AOBRDs and ELDs

Differences between AOBRDs and Logging Software Programs According to the FMCSA

Differences in Deadline to Switch to ELDs

Those operating Commercial Motor Vehicles (CMVs) who fall under the HOS rules can use AOBRDs (automatic onboard recording devices) as long as they had them installed as of  Dec. 17, 2017 or before. For those in this group, the deadline to switch to ELDs is  December 16, 2019. To be compliant they must at all times:

  • Integrally synchronized with the operations of the commercial motor vehicle in which it is installed
  • Record engine use
  • Record road speed
  • Record miles driven
  • Record date and time of day

Differences in the AOBRD and ELD Laws

The table below highlights what is addressed under each of the laws. Many of the issues addressed and resolved with the ELD ruling were not with the AOBRD ruling. Even with the extension, all AOBRD users are subject to the new supporting document requirements starting on the compliance date.

Differences in Technology

According to the FMCSA and the Commercial Vehicle Safety Alliance (CVSA), AOBRDs are different from logging devices is that AOBRDs connect data from CMVs differently. The 1988 ruling for AOBRDs have no technical specifications in how data is electronically transferred. Data under the ELD rule requires both telematics (web services and email) AND local transfer (Bluetooth and USB). AOBRDs transfer data mainly through web services and email.



You can download the updated guidance from the FMCSA here or at the FMCSA.

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