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OS MasterMap Highways Network support

Resources and frequently asked questions to help you make the most of this product.

Getting started

OSMM Highways Network brings together data from authoritative sources such as the National Street Gazetteer (NSG) and OS Large Scale Road data to create a single authoritative view of the road network.


Getting started guide (PDF)

OS MasterMap Highways Network is designed to be used as a single source of highway asset management by private and public sectors alike.

Product guide (PDF)

The Highways Network integrates the Unique Street Reference Number (USRN) from the National Street Gazetteer with the most detailed definitive geometry from Ordnance Survey.

OS MasterMap Highways Playbook (PDF)

Simple answers to common questions on OS MasterMap Highways Network

Release note (PDF)

This release note provides information about the December 2020 release of OS MasterMap Highways Network.

Roads (PDF)

Technical specification for roads.

Routing and Asset Management (PDF)

Technical specification for Routing and Asset Management.

Paths (PDF)

Technical specification for paths.

Speed (PDF)

Technical specification for speed.

OS MasterMap Highways Network - Roads

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