> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-openmap-local/os-openmap-local-technical-specification/code-lists/railwaytrackclassification.md).

# RailwayTrackClassification

## Code list: RailwayTrackClassification

| Code         | Description                                                                                                                      |
| ------------ | -------------------------------------------------------------------------------------------------------------------------------- |
| Multi Track  | A representation of two or three parallel or near-parallel pairs of rails up to a specified distance apart.                      |
| Narrow Gauge | A representation of a pair of rails that are more than 0.508m and less than 1.435m apart. Also includes monorails.               |
| Single Track | A representation of a pair of rails that are not parallel or near-parallel to another pair of rails within a specified distance. |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-openmap-local/os-openmap-local-technical-specification/code-lists/railwaytrackclassification.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.