Integrated Transport Network

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The Integrated Transport Network (ITN) is an Ordnance Survey dataset containing details of the transport network for Great Britain. It is part of the OS MasterMap set of products.

Integrated Transport Network data are supplied in Geography Markup Language file format. The network is a link-and-node based network containing details about each link such as: the class of road (A-road, B-road, etc) nature of road (Single carriageway, dual carriageway, roundabout, etc), road names and road routing information (RRI) (banned turns, one-way streets etc).

ITN is used as the roads network by Transport Direct Portal for its car and cycle journey planning.

ITN is referenced in the CycleNetXChange schema.

ITN forms a key element in the UK Digital National Framework (DNF).

"Integrated Transport Network" is a registered trademark of Ordnance Survey, the national mapping agency of Great Britain.