Road finisher and method for determining the layer thickness of a paving layer produced

A road finisher for producing a paving layer on a subgrade on which the road finisher is movable along a paving direction during a paving run, the road finisher comprising a height-adjustable paving screed for producing the paving layer and a leveling system configured to control a height of the paving screed, in order to compensate for unevenness of the subgrade, wherein the leveling system comprises a first measuring device comprising at least a first sensor unit configured to contactlessly measure at least a first distance to a surface of the subgrade during the paving run and at least one second sensor unit configured to contactlessly measure at least a second distance to a surface of the paving layer produced on the subgrade during the paving run, wherein the road finisher is configured to determine a reference level based on the first and second distances, on the basis of which a leveling actual value can be provided to the leveling system for controlling the height of the paving screed, and wherein the road finisher is configured to further determine a layer thickness of the paving layer produced on the subgrade based on the first distance measured by means of the first sensor unit and on the second distance measured by means of the second sensor unit.