# Pavement polygons

## Background

A Road Track Or Path Feature Type is found within the Transport Features Collection of the OS NGD Transport Theme. It provides a polygon representation for transport-related features, which includes pavements. To identify the features which represent pavements you can filter on the `Description` attribute for a value of `Pavement`. This will result in you obtaining a polygon representation of the pavements for your areas of interest.

<figure><img src="https://170091638-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0pZjHxkAvY7Mn6TqFBMD%2Fuploads%2FVLcBVp8xKhshy3v0xXz9%2Fpolygon%20pavement%20data.png?alt=media&#x26;token=7d1caa6c-7497-47d1-8984-f8f2923b0519" alt=""><figcaption><p>Example of Polygon Pavement Data in the Road Track Or Path Feature Type. A background map is included for context.</p></figcaption></figure>

## Technical detail

Pavement polygons have been captured as part of Ordnance Survey’s topographic data capture and are ‘surveyed’ features. These features are not segmented per road/street but are contiguous until broken by a real-world feature such as a road.

These features (unlike those described in following sections) do not contain specific attribution on pavement width, total presence, or sides of specific roads and streets.

### Examples of uses this data does support

* An accurate depiction of the location and extent of pavements, primarily suited for visualisation use cases.
* Allocation of pavement widths for entire pavement polygons (noting these polygons are not clipped to roads).

### Examples of uses this data doesn't support

* This polygon dataset has not been designed as and is not a routable network.
* The pavements are not split into polygons only for roads they correspond to.
* A linked dataset to the road link or pavement link data. There is no relationship between these polygons and the other two related feature types: Road Link and Pavement Link.