If you've been driving long enough, you remember AOBRDs — the logging boxes that came before today's ELDs. They did a similar job, but the rules around them were looser. Here's what actually changed and why it still matters.
AOBRD stands for Automatic On-Board Recording Device. These units connected to the truck and recorded duty status electronically under an older FMCSA regulation. They were a real step up from paper logs, but the technical requirements were minimal. Manufacturers had a lot of freedom in how the device worked, how logs were displayed, and how edits were handled. Two AOBRDs from different vendors could behave quite differently at a roadside inspection.
ELD stands for Electronic Logging Device. It's the standardized replacement the FMCSA rolled out with the ELD mandate. The key word is standardized: every compliant ELD has to meet the same technical specification, self-register with the FMCSA, and appear on the agency's registered device list. If you're new to the mandate itself, our ELD mandate explainer covers who has to run one.
Carriers had to start using ELDs (or grandfathered AOBRDs) at the end of 2017. Fleets already running AOBRDs got extra time — a grandfather window that ended on December 16, 2019. After that date, AOBRDs were no longer acceptable, and every driver subject to the rule had to be on a registered ELD. So while people still say "ELD vs AOBRD," the transition is long finished: AOBRDs are simply not legal for covered drivers anymore.
| Feature | AOBRD | ELD |
|---|---|---|
| FMCSA self-registration | Not required | Required — on the registered list |
| Roadside data transfer | Show on device | Standardized transfer (telematics/local) plus display |
| Automatic data captured | Less | More, including periodic location and engine events |
| Edits | More carrier flexibility | Original record preserved; annotations required |
| Malfunction handling | Loosely defined | Standard codes and driver procedures |
The biggest practical changes are around data transfer and edits. An ELD has to offer a standardized way to send your logs to an officer, and it can also display them on screen. On edits, the ELD keeps the original entry and requires an annotation for changes — automatically recorded driving time can't simply be erased. That's a real shift from the AOBRD era, and it's the same reason honest corrections still work while cover-ups don't. Our guide on editing ELD logs legally walks through exactly what you can and can't change.
You won't buy a new AOBRD today, but the distinction still comes up. Drivers switching devices sometimes hear old AOBRD habits described as if they still apply — like the idea that a carrier can freely rewrite logs. Under the ELD rule, that's not how it works. Knowing the difference helps you spot a device or a practice that's stuck in the past. And the underlying hours you're logging haven't changed: the limits in our HOS rules guide are exactly what your ELD is there to prove.
TruckSpot ELD is a registered device built to the current standard — standardized roadside transfer, preserved original records with required annotations, clear malfunction codes, and driver-visible logs. There's nothing left over from the AOBRD days to trip you up at an inspection. If you're moving off an older setup, switching is straightforward.
Run a modern, registered ELD — start for $1 →An AOBRD was the older automatic on-board recording device allowed under earlier rules. An ELD is the newer standardized device required by the FMCSA mandate. ELDs must self-register with the FMCSA, support standardized roadside data transfer, record more data automatically, and follow stricter edit rules that keep the original record.
No. The grandfather period for AOBRDs ended on December 16, 2019. Since then, drivers subject to the ELD rule must use a registered ELD, not an AOBRD.
If your device is on the FMCSA's registered ELD list and working, you are compliant. The AOBRD-to-ELD transition is already complete, so any device sold as an ELD today should meet the current technical standard.