Emissions data for different transportation methods can be viewed in the data cards similarly to material resources and other data points in One Click LCA database. Data cards are available in the 'Building materials' query for each tool that allows manual adjustments of transportation data.
When the transportation method dropdown menu is open, click on the green question mark to open the data card. You can find the data source under 'Datapoint background information' tab and the breakdown of environmental impacts under 'Environmental profile' tab.
All transportation data is declared per tonkm or tonmile; e.g. kilograms of CO2 equivalent per ton of material transported per kilometer or mile. Impacts of other than global warming potential are shown in tools where results are presented for multiple impact assessment categories (e.g. LEED, BREEAM).