frequencies.txt: Headway (time between trips) for routes with variable frequency of service.
| Column |
|---|
| trip_id |
| start_time |
| end_time |
| headway_secs |
|
|
trip_id,start_time,end_time,headway_secs 18317254,05:00:00,28:59:00,300 18317255,05:00:00,28:59:00,300