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The article considers the problem of the reliability of semitrailer truck. The results of processing statistical data on the workability of semitrailer trucks due to a malfunction of the brake system are presented. Data processing was carried out according to the operating data of the world’s leading companies VOLVO and MERCEDES - BENZ (truck), as well as Schmitz, Kögel, Krone (semitrailer). The results of processing the data on the brake pads wear of the truck’s disc brakes are presented. The mass of friction material resulting from the wear of brake pads, calculated per millimeter of worn-out pads and kilometer run of a semitrailer truck, has been determined. An expert assessment and ranking of factors affecting the wear of the friction pair “brake dick - pad” of the road train was carried out. A technical solution for the abrasive particles capture that occurs during braking is proposed. This system can be used on all vehicles with disc brakes.
