As well as converting to GTFS UK2GTFS
has functions for
manipulating GTFS files.
gtfs_clean()
Clean simple errors from GTFS files
gtfs_compress()
Reduce file size of a GTFS object
gtfs_fast_trips()
Find fast trips
gtfs_validate_internal()
Validate a GTFS object (in
R)
gtfs_merge()
merge a list of gtfs files
gtfs_split()
Split a GTFS object
gtfs_split_ids()
Split a GTFS object based on
trip_ids
gtfs_clip()
Clip a GTFS object to a geographical
area