NVdB

NVDB, short for Nationell Vägdatabas, is Sweden's national road data repository. It serves as the authoritative source of information about the Swedish road network for national, regional, and local authorities, as well as for industry partners and researchers. The database is maintained by Trafikverket, the Swedish Transport Administration, in collaboration with other public authorities and external contributors where appropriate.

The NVDB contains data about road geometry, classifications and attributes such as road type, number of lanes, speed limits, access restrictions, road works, and traffic control devices. It also holds information on road infrastructure objects including traffic signs, road markings, barriers, and other devices.

Data is organized by asset types and uses a standardized data model designed for integration with GIS, mapping, and planning tools. Updates are produced by multiple data producers, with quality assurance, versioning, and change history to support traceability.

Access to NVDB is provided through application programming interfaces and web services. Access is typically granted to public authorities, municipalities, contractors, and researchers; certain datasets or interfaces may be available via open data portals for broad use.

Common uses include road planning and maintenance, traffic management, asset management, routing and navigation, and spatial analyses that inform policy and investment decisions.

NVDB represents a central component in Sweden's digital infrastructure for transport, emphasizing interoperability, data quality, and regular updates to reflect changes in the road network.