Emission factors from Environment Company of Sao Paulo, Brazil (CETESB)

units 'g/km'; Emission factors for buses based on estimates from the Environment Company of Sao Paulo, Brazil (CETESB) 2017, and obtained from vein package. The R script used to organize the CETESB database can be found in the repository <https://github.com/ipeaGIT/gtfs2emis/blob/master/data-raw/ef_brazil_cetesb_db.R>.

ef_brazil_cetesb_db

Format

A data.table:

pollutant: character; Pollutants: "CH4", "CO2", "PM10", "N2O", "KML", "FC" (Fuel Consumption), "gD/KWH", "gCO2/KWH", "CO", "HC" (Total Hydrocarbon), "NMHC" (Non-Methane Hydrocarbon), "NOx", "NO2", "NO", "RCHO", "ETOH", "FS"(Fuel Sales) and "NH3"
veh_type: character; Vehicle categories by fuel:"BUS_URBAN_D", "BUS_MICRO_D", "BUS_COACH_D" and "BUS_ARTIC_D".
model_year: numeric; Filter the emission factor to start from a specific base year.
as_list: logical; Returns emission factors as a list, instead of data.table format.