Explore and Analyse General Transit Feed Specification (GTFS) Files with a Focus on Urban Mobility R package GTFShift version 1.0.0 A bundle of methods to harmonize GTFS and OSM data, enabling the integration and exploration of different layers of transit data, starting with the planned operations (GTFS), but also the infrastructure topology (OSM) and real-time information (GTFS-RT). Software Depends: R (>= 4.1.0) Imports: tidytransit, gtfstools, sf, tidyselect, tidyr, lubridate, httr, jsonlite, dplyr, osmdata, stringr, callr, purrr, rlang, xml2, withr Suggests: knitr, rmarkdown, mapview, osmextract, rosmium, testthat, zip, gtfsrouter (>= 0.1.4), reticulate, parallel, RProtoBuf, stplanr, lwgeom, progress, stringi, spelling Gonçalo F. Matos <goncaloafmatos@tecnico.pt> Comprehensive R Archive Network (CRAN) Gonçalo F. Matos [aut, cre] (ORCID: <https://orcid.org/0009-0001-3489-1732>), Rosa Félix [aut] (ORCID: <https://orcid.org/0000-0002-5642-6006>), Miguel Relvas Pires [ctb] GPL 2026-09-27 application/tgz https://CRAN.R-project.org/package=GTFShift doi:10.32614/CRAN.package.GTFShift en-US