Trucking Terms Guide

ELD and HOS / Logs

Off Duty in trucking

Short answer: Driver time relieved from work responsibility and not performing carrier work.

Plain-English explanation

Off duty is the ELD duty status a driver uses when they are completely relieved of all work responsibilities and not on call. Off-duty time is what accumulates to meet the required rest periods under HOS rules — the 10-hour off-duty requirement between driving shifts. The driver cannot be monitoring the truck, waiting for a load, or performing any work-related task during off-duty time.

With logs and hours, timing matters. A phrase may sound simple, but the ELD record, duty status, supporting documents, and roadside inspection context can change how it should be handled.

Why it matters in trucking

Off-duty time resets the on-duty clock only if the driver genuinely had no responsibilities during that period. A driver who is technically "off duty" but waiting at a shipper's dock, monitoring the trailer, or available to move cargo on short notice should be logging on-duty not driving, not off duty. The distinction affects whether the subsequent driving hours are legal under HOS.

A clean ELD log is easier to defend when the driver and office understand the vocabulary before an edit, annotation, or inspection request comes in.

Example in real use

A driver finishes delivering a load at 8:00 p.m. and has nothing else scheduled until the next morning. They park at a truck stop, log off duty, and sleep in the sleeper. By 6:00 a.m., they have 10 consecutive off-duty hours and can begin driving again with a fresh 11-hour driving window. If the dispatcher had called at midnight with a load that needed moving, that call would have interrupted the off-duty period.

Common mistakes or confusion

  • Logging off duty while still technically available to the carrier or while waiting for a load that could be tendered at any moment — that time should be on duty not driving.
  • Assuming that sleeping in the truck automatically qualifies as off-duty rather than sleeper berth — the distinction matters for some HOS calculations.
  • Not understanding that a single on-duty event during a rest period can reset the timer and require 10 more consecutive hours before driving again.

Related terms

Audit Trail A record of changes or events in a logging system that helps explain how driver log data changed. Supporting Documents Business documents used to support or verify a driver's records of duty status. Duty Status A driver log category such as driving, on duty, off duty, or sleeper berth. Personal Conveyance Off-duty movement of a commercial motor vehicle for personal use when conditions are met. Yard Move A special driving status used for movement in a yard rather than over-the-road driving. On-Duty Not Driving Time when a driver is working but not driving, such as loading checks or inspections.

Related guides

ELD and HOS Terms is the best next place to keep learning this topic.

Sources and last updated

HOS and ELD definitions reflect the current FMCSA Hours-of-Service Summary and ELD regulatory guidance, including the September 2020 final rule. See the sources page for full reference list.

Last updated: 2026-05-10