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-## 4. Routes (routes.txt)
-
-*This file is ***required*** to be included in GTFS feeds.*
-
-A route is a group of trips that are displayed to riders as a single
-service.
-
-| Field  | Required? | Description |
-| :----- | :-------- | :---------- |
-| `route_id` | Required | An ID that uniquely identifies the route. |
-| `agency_id` | Optional | The ID of the agency a route belongs to, as it appears in `agency.txt`. Only required if there are multiple agencies in the feed. |
-| `route_short_name` | Required | A nickname or code to represent this service. If this is left empty then the `route_long_name` must be included. |
-| `route_long_name` | Required | The route full name. If this is left empty then the `route_short_name` must be included. |
-| `route_desc` | Optional | A description of the route, such as where and when the route operates. |
-| `route_type` | Required | The type of transportation used on a route (such as bus, train or ferry). See below for more information. |
-| `route_url` | Optional | A URL of a web page that describes this particular route. |
-| `route_color` | Optional | If applicable, a route can have a color assigned to it. This is useful for systems that use colors to identify routes. This value is a six-character hexadecimal number (for example, `FF0000` is red). |
-| `route_text_color` | Optional | For routes that specify the `route_color`, a corresponding text color should also be specified. |
-
-### Sample Data
-
-The following extract is taken from the TriMet GTFS feed
-(<https://openmobilitydata.org/p/trimet>).
-
-| `route_id` | `route_short_name` | `route_long_name`            | `route_type` |
-| :--------- | :----------------- | :--------------------------- | :----------- |
-| `1`        | `1`                | `Vermont`                    | `3`          |
-| `4`        | `4`                | `Division / Fessenden`       | `3`          |
-| `6`        | `6`                | `Martin Luther King Jr Blvd` | `3`          |
-
-This sample shows three different bus routes for the greater Portland
-area. The `route_type` value of `3` indicates they are buses. See
-the next section for more information about route types in GTFS.
-
-There is no agency ID value in this feed, as TriMet is the only agency
-represented in the feed.
-
-The other thing to note about this data is that TriMet use the same
-value for both `route_id` and `route_short_name`. This is very
-useful, because it means if you have a user that wants to save
-information about a particular route you can trust the `route_id`
-value. Unfortunately, this is not the case in all GTFS feeds. Sometimes,
-the `route_id` value may change with every version of a feed (or at
-least, semi-frequently). Additionally, some feeds may also have multiple
-routes with the same `route_short_name`. This can present challenges
-when trying to save user data.
-
-### Route Types
-
-To indicate a route's mode of transport, the `route_type` column is
-used.
-
-| Value | Description       |
-| :---- | :---------------- |
-| `0`   | Tram / Light Rail |
-| `1`   | Subway / Metro    |
-| `2`   | Rail              |
-| `3`   | Bus               |
-| `4`   | Ferry             |
-| `5`   | Cable Car         |
-| `6`   | Gondola           |  
-| `7`   | Funicular         |
-
-Agencies may interpret the meaning of these route types differently. For
-instance, some agencies specify their subway service as rail (value of
-`2` instead of `1`), while some specify their trains as light rail
-(`0` instead of `2`).
-
-These differences between agencies occur mainly because of the vague
-descriptions for each of these route types. If you use Google Transit to
-find directions, you may notice route types referenced that are
-different to those listed above. This is because Google Transit also
-supports additional route types. You can read more about these
-additional route types at
-<https://support.google.com/transitpartners/answer/3520902?hl=en>.
-
-Very few GTFS feeds made available to third-party developers actually
-make use of these values, but it is useful to know in case you come
-across one that does. For instance, Sydney Buses include their school
-buses with a route type of `712`, while other buses in the feed have
-route type `700`.
-