> 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-overview/product-supply.md).
# Product supply
On this page you'll find product supply information for OS Highways Network products, including available formats, the supply mechanism, typical data volumes, coverage and currency.
## Available formats
**OS MasterMap Highways Network – Roads** and **OS MasterMap Highways Network – Paths** are supplied in three formats:
* Geography Markup Language (GML 3.2.1)
* GeoPackage
* Vector tiles (MBTiles)
All three formats are compressed into a regular zip file (.ZIP).
**OS MasterMap Highways Network – RAMI** is supplied in two formats:
* GML 3.2.1
* GeoPackage
Both formats are compressed into a regular zip file (.ZIP).
{% hint style="info" %}
* For information on how to open, use and understand a GeoPackage dataset, please refer to our [‘Getting Started with GeoPackage’ guide](https://docs.os.uk/os-downloads/getting-started/getting-started-with-geopackage). Further detailed information on GeoPackage can be taken from the [GeoPackage website](https://www.geopackage.org/).
* For information on how to install vector tiles (MBTiles) and the format's key features and benefits, please refer to our [‘Getting Started with Vector Tiles’ guide](/os-downloads/resources/product-resources/getting-started-with-geopackage-and-vector-tiles-guides/getting-started-with-vector-tiles.md).
{% endhint %}
## Supply mechanism
The three OS MasterMap Highways Network products are available to Public Sector Geospatial Agreement (PSGA) Members, OS Partners and commercial customers through the [OS Data Hub](https://osdatahub.os.uk/).
The products are available as both Full Supply and change-only update (COU), and customers can order an area of interest (AOI) or a Managed Great Britain Set (MGBS). The products are available as a download for all customers, and on DVD for customers ordering a MGBS.
## Typical data volumes for Full Supply
Uncompressed file sizes for the Full Supply of England, Scotland and Wales in the three available data formats are as follows:
### **Geography Markup Language (GML)**
* OS MasterMap Highways Network – Roads: 29GB
* OS MasterMap Highways Network – RAMI: 43GB
* OS MasterMap Highways Network – Paths: 11GB
### **GeoPackage (GPKG)**
* OS MasterMap Highways Network – Roads: 8.5GB
* OS MasterMap Highways Network – RAMI: 3GB
* OS MasterMap Highways Network – Paths: 5GB
### **Vector tiles (MBTiles)**
* OS MasterMap Highways Network – Roads: 1.5GB
* OS MasterMap Highways Network – Paths: 0.4GB
## Coverage
All three products cover Great Britain.
Information from the National Street Gazetteer (NSG) will only be provided for England and Wales. Information from the Scottish Street Gazetteer (SSG) will only be provided for Scotland.
## Non-geographic chunks
OS MasterMap Highways Network products will only be supplied as non-geographic chunks. Non-geographic chunking is a way of dividing up data into chunks that are supplied in separate volumes that have a feature count, as opposed to a given geographic National Grid area. For this reason, it is possible for features from various geographic locations to appear in one volume and for adjacent features to appear in different volumes. Non-geographic chunk volumes are designed to be loaded into spatial databases but can be used in a file format if all chunks are translated or imported into the system at the same time. For information on the volume feature counts for each feature type in OS MasterMap Highways Network, please see the [Volume feature count](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-overview/volume-feature-count.md) page.
## Currency
The product will be refreshed on a monthly basis.
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