Integrated Transport Network
Encyclopedia
The Integrated Transport Network (ITN) is an Ordnance Survey
Ordnance Survey
Ordnance Survey , an executive agency and non-ministerial government department of the Government of the United Kingdom, is the national mapping agency for Great Britain, producing maps of Great Britain , and one of the world's largest producers of maps.The name reflects its creation together with...

 dataset containing details of the transport network for Great Britain
Great Britain
Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

. It is part of the OS MasterMap® suite of products.

Ideal for route planning or to manage your resources, it consists of three elements: Road Network (road geometry), Road Routing Information (routing information for drivers on mandatory and banned turns and other restrictions) and Urban Paths (man-made path geometry in urban areas).

The data are supplied in Geography Markup Language
Geography Markup Language
The Geography Markup Language is the XML grammar defined by the Open Geospatial Consortium to express geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic transactions on the Internet...

 file format. The network is a link-and-node
Network topology
Network topology is the layout pattern of interconnections of the various elements of a computer or biological network....

 based network containing details about each link such as: the class of road
Great Britain road numbering scheme
The Great Britain road numbering scheme is a numbering scheme used to classify and identify all roads in Great Britain. Each road is given a single letter, which represents the road's category, and a subsequent number, with a length of between 1 and 4 digits. Originally introduced to arrange...

 (A-road, B-road, etc.) nature of road (Single carriageway, dual carriageway, roundabout
Roundabout
A roundabout is the name for a road junction in which traffic moves in one direction around a central island. The word dates from the early 20th century. Roundabouts are common in many countries around the world...

, etc.), road names and road routing information (RRI) (banned turns, one-way streets etc.).

The main benefits of this product are that all 545,000 Km of roads in Great Britain are accurately mapped in a consistent logical link and node network; that it contains 1.7 million road routing and information features; its currency (all road changes are captured within 6 months); the Urban Paths Theme complements ITN’s road information by adding path networks in all urban areas and it is designed to relate to other OS MasterMap layers.

ITN is used as the roads network by Transport Direct Portal
Transport Direct Portal
The Transport Direct Portal is a distributed Internet-based multi-modal journey planner providing information for travel in England, Wales and Scotland. It is managed by Transport Direct, a division of the Department for Transport...

 for its car and cycle
Bicycle
A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist, or bicyclist....

 journey planning.

ITN is referenced in the CycleNetXChange
CycleNetXChange
CycleNetXChange provides a standard format with which to exchange cycle path data, together with information about the quality of routes; This enables computerised transport systems to provide cycle routes....

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.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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