EcoTransIT World determines the emissions using an energy-based bottom-up approach. That means the emissions are determined based on the energy consumed and the fuel used. This makes a big difference to the otherwise usual top-down approach, in which gCO2e / tkm is multiplied by the freight weight and distance.
The bottom-up approach simulates the complete transport system. This ranges from the type of road to the vehicle class with corresponding properties, to the fuel. This method makes EcoTransIT World future-proof because, to map new types of fuel or vehicle technologies, only one parameter needs to be adjusted in the calculation workflow.
There is another way to calculate emission:
To calculate emission from a route, a tool called GIS is used to get the distance of each section of the supply chain. The optimal route is chosen in terms of the total cost of transportation using a Ford algorithm, which allows getting the minimum path between two points of the transportation network.
Ocean section: CO2 t/TEU = distance (kilometers) • fuel consumption / ship capacity (TEU) • load factor • maneuver factor • factor of hotelling • 3,17 • fuel laying factor
Road section: CO2 t/TEU = distance (kilometers) • truck consumption • load factor • 3,14 /2 • fuel laying factor
Railway section: CO2 t/TEU = distance (kilometers) • 10 • 0,028 • 0,4127 / 1.000