The pavement surface deterioration is a cause of the decrement of pavement serviceability and hence the road safety. The traffic load and climatic influences affecting the pavement are a basic source of the degradation. In combination with material parameters of pavement layers, with fatigue and with change of strength and structural parameters, the surface quality degrades in sequence.

The loss of surface skid resistance, ruts creation, and surface destruction are the most important consequences. The development of time forecast of the parameters has to be based on exact knowledge of processes and of the material properties changing in dependence on conditions affecting the pavement structure. The basic source of creation of functions of surface degradation is an analysis of time variation parameters.