RT Journal Article SR Electronic A1 Martynov, Igor A1 Gerlici, Juraj A1 Trufanova, Alyona A1 Shovkun, Vadim A1 Petukhov, Vadim A1 Safronov, Oleksandr A1 Kravchenko, Kateryna T1 Methodology for Maintaining the Dynamic Characteristics of Passenger Cars JF Communications - Scientific Letters of the University of Zilina YR 2023 VO 25 IS 2 SP B95 OP B102 DO 10.26552/com.C.2023.027 UL https://komunikacie.uniza.sk/artkey/csl-202302-0008.php AB The work presents the results of a statistical analysis of random processes of the coefficient of vertical dynamics of a passenger car variation. To determine the dynamic performance of cars the tests were running on the tracks of JSC "Ukrzaliznytsia". The main statistical characteristics of random processes are determined for various modes of car movement along curved and straight sections of the track. As a result of statistical processing of experimental data, correlation functions have been constructed that characterize the degree of connection between different time sections of the process of changing the coefficient of vertical dynamics. The obtained indicators of the law of distribution of the vertical dynamics coefficient values, approximating the models of correlation functions and the numerical values of their parameters, make it possible to further simulate the process of loading a passenger car without carrying out lengthy expensive tests.