VägID

VägID is a unique identifier assigned to a road or a defined road segment within Sweden’s national and regional road information systems. It serves as a stable reference that enables linking road data across datasets and applications, such as maintenance inventories, traffic statistics, construction projects, maps, and routing services.

The exact format of a vägID can vary between agencies and datasets. In practice, vägID may be alphanumeric and can encode geographic region, road type, or other attributes, in addition to a sequential element. The essential properties are uniqueness within the intended scope (national or local network) and persistence across changes to road names or administrative boundaries.

Uses of vägID include asset management by national and local authorities, planning and operations, and publication of road data through open data portals. In geographic information systems, vägID often serves as the primary key for road features, linking attributes such as speed limits, number of lanes, surface type, traffic volumes, and maintenance history.

Governance and data management of vägID systems are typically handled by Trafikverket (the Swedish Transport Administration) in coordination with regional authorities and municipalities. Updates commonly follow official road surveys, planning for construction, and incident reporting. While implementations may differ between datasets and agencies, vägID aims to provide interoperable road identifiers within Sweden’s road data ecosystem.

See also: Roads in Sweden, Trafikverket, Open data (Sweden), Geographic Information Systems.