Collect data for an ISO 14083 assessment

Define the boundary and activity data before calculating; document sources, periods and estimates together.

20 September 2024Updated 23 September 2026

Short answer

First define the assessment boundary and reporting period. For each transport or relevant activity, map distance, load, energy or other method-required data to its source; flag gaps as estimates. Record allocation methods and assumptions, then reconcile totals with operational records.

Before an ISO 14083 calculation, state which transport chain and reporting period are covered. Results cannot be compared if the boundary is unclear.

For each activity line, add the date range, route or operation, vehicle or service type, activity data and its source. Collect the data required by the applicable method.

Retain fuel receipts, telematics, dispatch records and supplier data with their sources. Mark clearly whether each value is measured, allocated or estimated.

If a vehicle carries multiple loads, document the allocation rule and the weight, volume or other driver used. Verify applicability against the full standard.

Check whether empty returns, transfers, depots or auxiliary energy are within scope; record excluded activity and the reason.

Reconcile period totals with fuel, distance and dispatch records. Keep data gaps, quality checks and calculation version in the reporting file.