> 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-paths/os-mastermap-highways-network-paths-technical-specification/feature-types/pathnode.md).
# PathNode
A point spatial object that is used to break up the Path Network for connectivity. The PathNode extends the RoadNode feature in the INSPIRE Transport Network (roads) model. The Path Network splits for the following circumstances:
* The location where an attribute changes
* The intersection or crossing of PathLinks
* The start/end of a PathLink
The context diagram below shows how the PathNode has been inherited from INSPIRE and the attribution held on the PathNode:
Context diagram: PathNode.
## PathNode Attributes
A point representing either the start/end of a path, the connectivity between two or more paths, or where one of the recorded attributes changes.
### id
Unique identifier; for PathNode, this is a TOID.
* **Attribute name**: gml\_id (GML), toid (GeoPackage), toid (Vector Tiles),
* **Type:** CharacterString
* **Size:** 20
* **Multiplicity:** \[1]
### identifier
Uniform Resource Identifier.
* **Attribute name:** identifier (GML), identifier (GeoPackage), Not provided (Vector Tiles)
* **Type:** CharacterString
* **Size:** 37
* **Multiplicity:** \[1]
### inspireId INSPIRE
External object identifier of the spatial object.
* **Attribute name:** inspireId
* **Type:** Identifier
* **Multiplicity:** \[0..1]
### beginLifespanVersion «lifeCycleInfo» «voidable» INSPIRE
Date and time at which this version of the spatial object was inserted or changed in the spatial data set.
{% hint style="info" %}
The time part is always set to zero.
{% endhint %}
* **Attribute name:** beginLifespanVersion
* **Type:** DateTime
* **Multiplicity:** \[1]
### geometry INSPIRE
The location of the node.
* **Attribute name:** geometry
* **Type:** GM\_Point
* **Multiplicity:** \[1]
### validFrom «voidable» INSPIRE
The time when the transport node started to exist in the real world.
{% hint style="info" %}
The time part is always set to zero.
{% endhint %}
* **Attribute name:** validFrom
* **Type:** DateTime
* **Multiplicity:** \[1]
### formOfRoadNode «voidable» INSPIRE
Description of the function of a path node in the road transport network.
* **Attribute name:** formOfRoadNode
* Type: [FormOfRoadNodeValue](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-code-lists/formofroadnodevalue.md)
* **Size:** 21
* **Multiplicity:** \[1]
### reasonForChange
The reason for a change made to a feature.
* **Attribute name:** reasonForChange\_codeSpace (GML), reason\_for\_change\_code\_space (GeoPackage), Not provided (Vector Tiles)
* **Type:** [ChangeValue](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-code-lists/changevalue.md)
* **Size:** 32
* **Multiplicity:** \[1]
### classification
Further specialisation of the form of path node
* **Attribute name:** classification (GML), Not provided (GeoPackage), classification (Vector Tiles)
* **Type:** [RoadNodeClassificationValue](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-code-lists/roadnodeclassificationvalue.md)
* **Size:** 19
* **Multiplicity:** \[0..1]
---
# 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-paths/os-mastermap-highways-network-paths-technical-specification/feature-types/pathnode.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.
