What is the Integrated Transport Network Layer of OS MasterMap?
The OS MasterMap Integrated Transport Network (ITN) Layer is an accurate, detailed and up to date digital road network for Great Britain. It consists of two themes, Road Network and Road Routing Information. It provides a flexible foundation for publishing, tracking, routing, telematics, analysis and asset management solutions and can be fully integrated with all OS MasterMap layers, for example, Address Layer 2 for to the door routing.