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Dealing with Unassigned Driving Time

One of the most common problems carriers have with electronic logging systems is dealing with unassigned drive time. What causes these “unassigned events”? They happen any time a vehicle with an or electronic logging device (ELD) is moved without someone being logged in as the driver.

Before the ELD mandate went into effect, many carriers that used electronic logs simply ignored these events or dealt with them as a spare-time project. However, the ELD mandate has changed the expectations when it comes to unassigned driving time. Carriers now must either:

Assign Time Assign the time to the correct driver


Attach a Comment Attach a comment explaining why it couldn’t be assigned to a driver

One key point here is that there is no third option. Ignoring the event, hiding it elsewhere in the system, or deleting it is not an option. During an audit or investigation, the investigator will verify that the carrier has been either assigning or explaining all unassigned drive time.

So why are these events a focus during an audit for carriers using electronic logs? Because failing to log in and then driving, or logging out and continuing to drive, is the most common falsification method used by drivers to “create” an 8- or 10-hour break when one does not exist, or to operate past a limit when using electronic logs.

Ignoring unidentified driving events is not an option.

Investigating the Time

To investigate ELD unassigned miles, the carrier’s log auditor (or whoever is assigned this responsibility) will need to review the unassigned driving time in the system and:

  • Determine who was driving the vehicle before and after the unassigned drive time.
  • Determine if the vehicle was in a position where someone other than one of those two drivers could have driven it, such as at a company yard or maintenance facility.
  • Review maintenance records to see if a tow truck or a mechanic may have moved the vehicle.
  • Contact the driver(s) involved if it is not clear who was driving the vehicle.

If it is clear which driver the ELD unassigned miles belong to, and the driver operating the vehicle during the unassigned period was up against a limit or driving after a break that was too short, you likely have found a driver that deliberately logged out (or logged in late) to be able to drive over a limit. There will be times when a driver legitimately forgot to log in or logged out early and unexpectedly had to do more driving. The key is determining if the driver took advantage of using the unassigned time to operate over a limit.

Do This Daily

The review and investigation of all unassigned driving time needs to be a daily function. If it’s not done daily, the number of events will quickly accumulate to an unmanageable level. Also, catching and stopping unassigned events quickly is critical, even if it involves a driver that did it by accident.

If your drivers figure out that you are not watching the unassigned driving or not catching them when they log out and drive, you may have an explosion in the number of unassigned driving events, with many of those being false logs. The longer it takes to find and contact the drivers involved, the more convinced they will become that you are not looking, or if you are, you are only looking half-heartedly.

Review Daily


To prevent unassigned drive time, train your drivers to:

  • Aways be logged in whenever operating a vehicle with a logging device
  • Always “claim” unassigned driving time when it is offered to them if it is theirs
  • Never move a vehicle when logged out
  • Using the special driving categories, personal conveyance and yard move, rather than logging out and driving in these situations

Next, you want to audit your unidentified driving events and assign them to the correct driver whenever possible. Once it has been assigned, contact and coach the driver to help prevent unassigned events in the future.

Prevent Events

Finally, make sure anyone that might move a vehicle has a log in and insist that they use it. If this is not possible, consider having a “reporting system” for these people to use. An example would be having technicians provide a note with the vehicle number, the date, and the time whenever they move a vehicle. This way, you won’t have to spend the time investigating these movements and will know to just attach a comment to them in the system.

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Hours of Service Management Service

Our Compliance Specialists use your aggregated data from ELDs, paper logs and time sheets to provide audit support and help you manage unassigned driving time, improve your compliance and more.

Learn more about Hours of Service Management Service.