• Data reference period
• Geographic localization (Mainland)
• Modes of transport

• TONNE-KILOMETRE BY INLAND WATERWAYS:  Unit of measure representing the movement of one tonne of goods by inland waterways over one kilometre.
• TONNE-KILOMETRE BY ROAD:  A unit of measurement representing the transport by road of one tonne of goods over one kilometre.
• INLAND WATERWAY TRANSPORT:  Any movement of goods and/or passengers in an inland waterway transport vessel in the given network of inland waterways.
• RAIL TRANSPORT:  Any movement of goods and/or passengers using a railway vehicle on a given railway.
• TONNE-KILOMETRE BY RAIL:  A unit of measure of goods transport which represents the transport of one tonne of goods by rail over a distance of one kilometre.
• ROAD HAULAGE:  Any movement of goods in a goods vehicle.
• REFERENCE PERIOD:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).

(Tkm mode of transport/ Total Tkm)* 100