Ordnance Survey has completed a two-year programme of quality control on its flagship transport dataset OS MasterMap Integrated Transport Network (ITN) Layer.
The programme has seen every road link in Britain checked by an Ordnance Survey data editor to ensure quality levels are maintained consistently across the country.
ITN Layer records the location of the nation’s roads, the findings of which are used to create many sat nav systems.
The programme covered 10,625 “tiles” of mapping and included checking the accuracy of road weight, width and height restrictions. Routing through local streets was also verified to ensure it was appropriate and safe.
Tom Satterthwaite, Ordnance Survey’s senior transport product manager, said: “Our two-year revision programme has seen a root and branch refresh of our transport network. This means its quality levels are consistent across the whole country, so our users can continue to rely on it for delivering essential services.
Many utility assets have been connected to the road network for the first time, including electrical substations, waterworks and wind turbines, to enable easier and more accurate routing.
Satterthwaite continues: “Refinements like adding utility assets reflect the needs of our customers. We have also improved how we represent complex junctions and the routing on private roads, so it’s as good as on any other. ITN Layer offers huge benefits for emergency services, freight companies, hauliers, local and central government. These quality improvements will further support them.”