transfers.txt: Rules for making connections at transfer points between routes.
| Column |
|---|
| from_stop_id |
| to_stop_id |
| transfer_type |
| min_transfer_time |
from_stop_id,to_stop_id,transfer_type,min_transfer_time 3230,1686,2,300 3230,3173,2,300 3230,3231,2,300 3231,1685,2,300