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

Analysis of the actual data evidences that optimal qualitycharacteristic can be derived with provision for the individualquality estimations for the diagnostic parameters such as BulkDensity, Bitumen Content, Filler Content, etc.

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

The results of the analysis allow to distinguish the qualitylevel of the plant production processes on the basis of the QMcharacteristic as well as prepare its quantitative estimation.

The approach shows essential efficiency. and can be recommendedin practical applications of quality estimations for asphalt mixingplant production.