> 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/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-code-lists/streettypevalue.md). # StreetTypeValue This code list is present in OS MasterMap Highways Network – Roads and OS MasterMap Highways Network – Paths products. The Street Feature Type is attributed with a 'streetType' property with the data type of StreetTypeValue. The following table describes the codes used to populate this field. ## **Code List: StreetTypeValue** {% embed url="" %} | Code | Description | | ----------------------------------- | -------------------------------------------------------------------------------------------------------- | | Designated Street Name | Officially named street | | Officially Described Street | Officially Described Street | | Numbered Street | Officially numbered street | | Unofficial Street Name | Unofficial local name for a street | | Street for addressing purposes only | A street which has been created for addressing purposes of the Local Land and Property Gazetteer (LLPG). | --- # 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/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-code-lists/streettypevalue.md?ask=&goal= ``` `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.