[.gtfs                  Subset a GTFS object
assert_gtfs             GTFS object validator
check_field_class       Check the classes of fields in a GTFS object
                        element
check_field_exists      Check the existence of fields in a GTFS object
                        element
check_file_exists       Check the existence of text files in a GTFS
                        object
export_gtfs             Export GTFS objects
get_gtfs_standards      Generate GTFS standards (deprecated)
gtfs_reference          GTFS reference
import_gtfs             Import GTFS transit feeds
new_gtfs                GTFS object constructor
print.gtfs              Print a GTFS object
summary.gtfs            Print summary of a GTFS object
