# roadnodedescriptionvalue This code list is used in association with the Classification attribute which is present within the Path Node Feature Type and the Description attribute which is present within the Road Node Feature Type. The code list describes further specialisation of the form of road node. | Label | Definition | | ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Access Point | No definition available. | | Grade Separation | A node which represents where there is a difference in physical level between two Links (either Road Links or Path Links) and in the real world they do not meet and split here. | | Mini Roundabout | A road junction where the effects of a roundabout on traffic flow are recreated by use of a delineated circular area of road markings or surface changes. | | Motorway Junction | A named intersection where a vehicle gains access or exits a motorway. | | Service Area | No definition available. | | Signalised Junction | Junction that has traffic lights or other signals on to slow / control traffic flow. | | Road Node | No definition available. | --- # Agent Instructions: 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: ``` GET https://docs.os.uk/osngd/code-lists/code-lists-overview/roadnodedescriptionvalue.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.