Glossary
AOBRD (Automatic On-Board Recording Device)
The technology ELDs replaced. AOBRDs automatically recorded duty status but weren't held to the same technical standard as ELDs, and haven't been legal to use since December 16, 2019.
Read the full explainer
The definition above is the short version. The page below explains AOBRD (Automatic On-Board Recording Device) in depth, with the rules, numbers and examples behind it.
ELD vs. AOBRD: What Changed