If your ELD shows "unidentified driving," it means the truck moved while nobody was logged in. Here's what causes those unassigned miles and how to clear them the right way.
An ELD records movement from engine data whether or not a driver is logged in. When the truck is driven without an active driver profile, the device parks that driving time under a special "unidentified driver" record instead of losing it. Those are your unassigned miles — and FMCSA expects them to be reviewed, not ignored.
When you log in, a compliant ELD shows any unidentified driving recorded on that truck and asks you to review it. If the miles are yours, you accept them and they attach to your log with the correct duty status. If they aren't yours, you reject them — and they stay on the unidentified profile for the carrier to handle. Never claim driving you didn't do just to clear the prompt; that turns a housekeeping item into a Hours of Service accuracy problem.
Unassigned miles that no driver claims don't just disappear. The motor carrier must review them and either reassign them to the right driver or annotate the record explaining what happened (for example, "yard technician repositioned unit for PM service"). Carriers are required to keep unidentified driving records — and the annotations — on file for six months, the same as other ELD records.
There's a hard trigger to know about: when more than 30 minutes of driving time in a 24-hour period is left unassigned, the ELD sets an unidentified driving records data diagnostic. That's different from a malfunction, but it's a flag an officer can see at a roadside inspection — and a stack of unexplained unassigned miles is exactly the kind of thing that draws extra scrutiny during a DOT audit.
The fix is mostly habit: log in before the wheels turn, and give shop and yard staff a documented way to account for the moves they make. Reviewing unidentified driving should be a quick daily task, not a year-end scramble.
TruckSpot ELD surfaces unidentified driving the moment a driver logs in, lets them accept or reject with one tap, and gives back-office staff a clear queue to annotate or reassign the rest — with every action time-stamped and retained. Instead of hunting for mystery miles, you clear them as they happen. See how the whole system fits together on the TruckSpot ELD homepage.
Clear unassigned miles automatically — start for $1 →It's driving time the ELD recorded while no driver was logged in — the truck moved but nobody claimed the miles, so the ELD stores them under an "unidentified driver" profile until they're reviewed.
Yes. If the unassigned miles are yours, you review and accept them so they attach to your record. If they aren't yours, you reject them and the motor carrier must explain or reassign them.
The ELD sets an unidentified driving records data diagnostic when more than 30 minutes of driving time in a 24-hour period is left unassigned to any driver.