Significant increase in the national asphalt hot mix production required development of the quality system in asphalt mising plants. The paper describes the quality system in detail and presents original statistical elaboration with respect to the problem under study. A major component of the quality system is a Quality Mark (QM) characteristic which is a statistical estimation for the quality of the produced asphalt mixture.

Analysis of the actual data evidences that optimal quality characteristic can be derived with provision for the individual quality estimations for the diagnostic parameters such as Bulk Density, Bitumen Content, Filler Content, etc.

The prediction model for the QM characteristic is presented and its advantage and sensitivity are demonstrated.

The results of the analysis allow to distinguish the quality level of the plant production processes on the basis of the QM characteristic as well as prepare its quantitative estimation.

The approach shows essential efficiency. and can be recommended in practical applications of quality estimations for asphalt mixing plant production.