Frequently Asked Questions

Where is the modelled (non-Google) transport data from?

Transport covers emissions associated with most forms of transport with some minor exclusions such as transport within industrial facilities. A spatial scaling factor compliant with the GPC using vehicle registration data by vehicle type, from the state to the municipal level is used to assign each vehicle a fuel type. State fuel sales data for diesel, petrol and LPG is then allocated to the appropriate vehicle type and scaled to the municipal level using the spatial scaling factor. Petrol vehicles are assigned to the residential subsector whilst diesel and LPG vehicles are assigned to the commercial sector. If required, the data is scaled temporally to align with the profile year. Residential fuel consumption is scaled temporally using regressions developed from municipal-level population data. Commercial fuel consumption is scaled temporally using regressions developed from municipal-level jobs data and national-level emissions factors are applied. This method uses data including fuel consumption by volume, state and vehicle type; vehicles registered by municipality, year and vehicle type.

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