The present paper describes the adduced effects on the response of road structures further to the installation of PEDB systeJRs. Iabora tory research results f olloved by experimental construction sites have enabled highlighting of PEDB influence on the aechanical characteristics of paveJRents through the enhanced water balance of the structures during critical periods of the paveaent service life. Deflectometric analyses of equipped and non-equipped sit have enabled quantification of the resulting structural gains. laboratory studies supported. by on-site findings have deaonstrated the advantages of PEDB systeas in thaw/frost periods.