> 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/roadclassificationvalue.md). # RoadClassificationValue This code list is present in OS MasterMap Highways Network – Roads product. Road classification is used by government to ensure that there is a feasible, logical road network throughout the country. Road classifications are set to take into account the traffic management goals and road categorisation approach of the Local Highway Authority (LHA) in England and Wales. Currently, in Scotland only Motorway A Road and B Road classifications are provided. RoadLink, Road and Street Feature Types are attributed with a 'roadClassification' with a data type of 'RoadClassificationValue'. The table below describes the codes which will be used to populate this field and the description for each code. ## **Code List: RoadClassificationValue** {% embed url="" %} | Code | Description | | --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Motorway | A multi-carriageway public road connecting important cities. | | A Road | A major road intended to provide large-scale transport links within or between areas. | | B Road | A road intended to connect different areas, and to feed traffic between A roads and smaller roads on the network. | | Classified Unnumbered | Smaller roads intended to connect together unclassified roads with A and B roads, and often linking a housing estate or a village to the rest of the network. NOTE 1: A Street may be assigned a local classification number by the Local Highways Authority. | | Unclassified |

Roads intended for local traffic.

NOTE 1: These may be designated Unofficial local road classifications. For example: D, E, F and G roads.

| | Not Classified | Roads that have not been assigned a road classification at national or local level by a designation authority. | | Unknown | The classification of the road is unknown because the RoadLink is not a Motorway, A or B road and the RoadLink has not been matched to the National Street Gazetteer. | --- # 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/roadclassificationvalue.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.