# Estimating Public Transport Emissions from General Transit Feed Specification (GTFS) Data

## Documentation for package ‘gtfs2emis’ version 0.1.2

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

ef_brazil_cetesb | Running exhaust emissions factors for buses from Brazil (CETESB)
ef_brazil_cetesb_db | Emission factors from Environment Company of Sao Paulo, Brazil (CETESB)
ef_europe_emep | Speed-dependent emission factor from the European Environment Agency (EMEP/EEA) model
ef_europe_emep_db | Emission factors from European Environment Agency — EMEP/EEA
ef_scaled_euro | Scale local emission factors in order to make emission estimates a function of speed.
ef_usa_emfac | Running exhaust emissions factors for buses from United States (EMFAC2017 model)
ef_usa_emfac_db | Emission factors from California Air Resources Board (EMFAC Model)
ef_usa_moves | Running exhaust emissions factors for buses from United States (MOVES3 model)
ef_usa_moves_db | Emission factors from MOtor Vehicle Emission Simulator (MOVES) Data.frame of emission factors for buses based on values from the MOVES3 Model. Estimates expressed in units 'g/km'.
emission_model | Emission model
emis_grid | Spatial aggregation of emission estimates into a grid
emis_summary | Summarize emissions estimates
emis_to_dt | Convert emission estimates from list to data.table format
emi_europe_emep_wear | Emissions from road vehicle tyre, brake, and surface wear from the European Environment Agency (EMEP/EEA) model
slope_class_europe_emep | Add slope class into the transport model (LineString Simple Feature object)
transport_model | Transport model