The Netherlands operates a digital system for exchanging location data of infrastructure networks, such as underground cables and pipelines. This system (known as KLIC) is managed by Kadaster, while network owners are responsible for providing accurate data about the location of their buried assets.
Many utility maps used in construction projects combine outdated and recently surveyed network drawings. As a result, it is often unclear whether a map is up-to-date, complete, or accurate. To verify this, project teams dig trial trenches during construction and maintenance works to compare the actual underground situation with the map.