adjust_arrival_departure	adjust_arrival_departure
adjust_speed	adjust_speed
append_height	append_height
filter_single_trip	filter_single_trip
filter_valid_stop_times	filter_valid_stop_times
gps_as_sflinestring	gps_as_sflinestring
gps_as_sfpoints	gps_as_sfpoints
gtfs2gps	gtfs2gps
gtfs_shapes_as_sf	gtfs_shapes_as_sf
gtfs_stops_as_sf	gtfs_stops_as_sf
read_gtfs	read_gtfs
remove_invalid	remove_invalid
simplify_shapes	simplify_shapes
test_gtfs_freq	test_gtfs_freq
write_gtfs	write_gtfs
