Using the General Transit Feed interface, you can save PuT and timetable data as a General Transit Feed (GTF) *.zip file. The GTF consists of multiple files saved in the *.txt format to a specified folder.
The General Transit Feed interface allows you to import and export public transport supply data. A GTFS consists of a series of text files *.txt, which are contained in a single *.zip file. The individual files each describe the specific aspects of the transport supply. Further information on GTFS can be found at 
https://gtfs.org/documentation/schedule/reference/
