GTFS-History

### Describe the problem

There are a number of useful datasets that aren’t covered by GTFS-Schedule or GTFS-Realtime that could improve the user experience, simplify the existing specs, reduce complexity and data size, or create new experiences and support new use cases.

### Use cases

Some use cases that aren’t supported:

1) historical data and stats
2) financial information
3) stop, route and vehicle history and usage
4) maintenance information
5) historical alerts and a subset of other old realtime info
6) usage, outages

### Proposed solution

I propose a new zip file GTFS-History[-YYYY].zip (where -YYYY is optional for larger systems to chunk data by year) which would contain some of the following information:

|File|Description|
| --- | --- |
| Ridership.txt | Ridership counts, breakdowns and summaries optionally by - time (year, quarter, week, month, day), location (system, mode, line, stop, segment, vehicle), type (tap, cash, transfer, etc.). |
| Maintenance.txt | Maintenance activity log - time, vehicle/stop/line/segment, type (scheduled/unscheduled, activity (long list - brakes replacement, rail grinding, etc.)
| Finance.txt | Financial breakdown and summaries by - time, location, income/expense, division/groups, etc. this could include things like fare income, advertising income, fuel costs, etc. |
| Alerts.txt | Historical alerts from GTFS-Realtime |
| Delays.txt | Time, Location ( including multiple stops), Length, Alternative Service provided, reason (ie. trespass, obstruction, etc.), links to investigation reports |
| Historical Routes and Stops | Duplicate design as gtfs schedules - used for retiring lines, but keeping information around if useful for historical reasons|

### Additional information

If this idea is worth exploring, obviously it would need to be fleshed out and more work put into developing a spec that was compatible with the existing feeds and systems.

At this point I haven’t put much work or thought into the spec details, but am willing to put more effort in if the community sees value in something along these lines.