GirderGroup

Modeled Scenario: A Motor Carrier Cuts ELD Audit Prep From 60 to 20 Hours

An assumption-based model of how a motor carrier could restructure hours-of-service audit preparation. Every input is stated; no client is described.

Dwayne ThompsonEngineering, standards & trade editor · Kingston
June 30, 2025 · 5 min read
Trucks on a highway at dusk, illustrating a modeled hours-of-service audit preparation.
Trucks on a highway at dusk, illustrating a modeled hours-of-service audit preparation. · Image: Girder Group
Modeled Scenario

This is a model, not a client

The carrier below does not exist. It is a composite built to illustrate how hours-of-service audit preparation could change under automation. Every figure is an assumption stated in the methodology, not a measured result.

Executive summary

A hypothetical motor carrier prepares for a hours-of-service audit each cycle by reconciling ELD logs, resolving unassigned driving time, and matching supporting documents by hand. The modeled baseline is 60 person-hours; restructured around continuous reconciliation, the model brings audit prep to 20 person-hours, with a compliance owner still accountable.

Challenge

Unassigned driving time and unexplained edits accumulate between audits, and supporting documents are matched to logs only when an audit looms. The result is a scramble that is both slow and risky, since problems surface late. The obligations are set out in our reference on hours-of-service and ELD records.

What was at stake

Late-discovered unassigned time and document mismatches are the findings that turn an audit adverse. The manual approach concentrates that risk into a few pressured days rather than resolving it as it arises.

Solution (modeled)

The modeled redesign resolves unassigned driving time continuously, flags unexplained edits as they occur, reconciles supporting documents to logs on an ongoing basis, and assembles the audit package from work already done, leaving the compliance owner to review and sign.

Results (modeled)

The largest savings come from work that no longer happens in a rush at audit time because it happened continuously.

Prep stageBaseline (modeled)With automation (modeled)Change
Resolve unassigned time18 hrs4 hrs−14
Review edits & annotations14 hrs4 hrs−10
Reconcile supporting docs18 hrs6 hrs−12
Assemble audit package10 hrs6 hrs−4
Total per cycle60 hrs20 hrs−40

Modeled hours-of-service audit-prep hours for a motor carrier. Illustrative estimates only.

Methodology

Baseline hours are a bottom-up estimate for a carrier reconciling logs, edits, unassigned time, and supporting documents. Post-automation hours assume continuous reconciliation with a human review-and-sign step. Scope and rigour are held constant across both columns.

Assumptions & limits

Figures are illustrative planning estimates, not measured outcomes, and vary with fleet size, ELD platform, and document volume. This is not a quotation, a benchmark, or a guarantee of results.

Sources

  1. 1.49 CFR Part 395, Hours of Service of Drivers, current text.Electronic Code of Federal Regulations
  2. 2.Operational figures: Girder Group internal model, assumptions stated above. Illustrative only.Girder Group

Dwayne Thompson

Engineering, standards & trade editor · Girder Group · Kingston

Dwayne Thompson writes on compliance engineering, standards (NIST), and trade and logistics regulation (CBP, DOT, FMC), from Girder Group's Kingston desk.

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