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# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "gtfs2emis" in publications use:'
type: software
license: MIT
title: 'gtfs2emis: Estimating Public Transport Emissions from General Transit Feed
  Specification (GTFS) Data'
version: 0.1.2
doi: 10.1016/j.trd.2023.103757
identifiers:
- type: doi
  value: 10.32614/CRAN.package.gtfs2emis
abstract: 'A bottom up model to estimate the emission levels of public transport systems
  based on General Transit Feed Specification (GTFS) data. The package requires two
  main inputs: i) Public transport data in the GTFS standard format; and ii) Some
  basic information on fleet characteristics such as fleet age, technology, fuel and
  Euro stage. As it stands, the package estimates several pollutants at high spatial
  and temporal resolutions. Pollution levels can be calculated for specific transport
  routes, trips, time of the day or for the transport system as a whole. The output
  with emission estimates can be extracted in different formats, supporting analysis
  on how emission levels vary across space, time and by fleet characteristics. A full
  description of the methods used in the ''gtfs2emis'' model is presented in Vieira,
  J. P. B.; Pereira, R. H. M.; Andrade, P. R. (2022) <https://doi.org/10.31219/osf.io/8m2cy>.'
authors:
- family-names: Bazzo
  given-names: Joao
  email: joao.bazzo@gmail.com
  orcid: https://orcid.org/0000-0003-4536-5006
- family-names: Pereira
  given-names: Rafael H. M.
  email: rafa.pereira.br@gmail.com
  orcid: https://orcid.org/0000-0003-2125-7465
- family-names: Andrade
  given-names: Pedro R.
  email: pedro.andrade@inpe.br
  orcid: https://orcid.org/0000-0001-8675-4046
preferred-citation:
  type: article
  title: Estimating Public Transport Emissions from General Transit Feed Specification
    Data
  authors:
  - family-names: Bazzo
    given-names: João Pedro
  - family-names: Pereira
    given-names: Rafael H. M.
    email: rafa.pereira.br@gmail.com
    orcid: https://orcid.org/0000-0003-2125-7465
  - family-names: Andrade
    given-names: Pedro R.
    email: pedro.andrade@inpe.br
    orcid: https://orcid.org/0000-0001-8675-4046
  journal: 'Transportation Research Part D: Transport and Environment'
  year: '2023'
  volume: '119'
  doi: 10.1016/j.trd.2023.103757
  url: https://doi.org/10.1016/j.trd.2023.103757
  issn: 1361-9209
repository: https://ipea.r-universe.dev
repository-code: https://github.com/ipeaGIT/gtfs2emis
commit: 99204aabe2073ffbe193784632f193836a2786c7
url: https://ipeagit.github.io/gtfs2emis/
date-released: '2026-02-12'
contact:
- family-names: Bazzo
  given-names: Joao
  email: joao.bazzo@gmail.com
  orcid: https://orcid.org/0000-0003-4536-5006