The first three articles published in this issue are devoted to the study of the dynamics of individual nodes of the car. The first article discusses the methodology and results of the study of loads arising between links of a road train in various road conditions, when installing metal and rubber elastic elements in the coupling device. In the second article, the method of studying nonlinear oscillations of pressure discswitching in the process of its inclusion is considered. The third article is devoted to the study of the torsional oscillations of the transmission of the car, taking into account the presence of unequal angular velocity data in it, as well as areas of parametric resonance and resonance with disturbing moments of the engine. In the 4th article, the computational-experimental method for the study of transient processes of autotractor diesel engines with the use of a digital computer is presented. The results of the study of the dynamicsunestablished modes of operation of the diesel engine YAMZ-238. "e"turbocharged and thsdamshuskno characteristics. The influence of individual parameters of the diesel dynamic system on the nature of transition processes.