Shielding and insulation

The target category contains information on groundwater protection and salt use. Groundwater protection is a protective structure designed to prevent harmful substances from penetrating the soil or groundwater. The effective date of the data type does not indicate the date of construction of the protection in the old data (<2020).

The Centres for Economic Development, Transport and the Environment are responsible for maintaining the information. The information is obtained from plans and other documents. The update of the data is continuous. Some of the data is imported annually from Harja and TSSR systems. VAK transport data will be updated on the basis of Trafin Vak transport data's 5-year report.

The target category is versioning. The information covers roads and ramps.