The fundamental physical unit of freight transport work, representing one metric tonne of cargo carried over one kilometer.
A tonne-kilometer (tkm) is the standard metric used to measure freight activity. It combines cargo mass and transport distance, allowing transport efficiency and greenhouse gas intensity to be normalized across diverse vehicle sizes, routes, and modes.
Acts as the standard denominator for all logistics efficiency metrics in the platform, calculating emissions intensity in grams of CO2e per tonne-kilometer (g CO2e/tkm).
Transport Work (tkm) = Cargo Weight (metric tonnes) * Transport Distance (km). For multi-drop routes, calculated per consignment leg.
Must not be confused with vehicle-kilometers (vkm), which measure truck distance regardless of payload mass.