“…These defects, which are often overlooked by railroad personnel, in combination with the aforementioned increasing speeds and loads, could produce extremely high impact forces, which could lead -due to passage of a large number of vehicles -to accelerated deterioration of all RIE, with unforeseeable consequences, Figure 1 [5]. As it is often explicitly stated, impact forces that occur as a result of local irregularities at the wheel/rail contact are often the main cause of track deterioration [6,7]. On the other hand, these defects precisely indicate the target group or, more specifically, the origin of the motives for creation and utilization of the V/TI Monitor system, whose data will be analysed in the context of this article, and based on which, in accordance with the basic principles of vehicle dynamics, certain mechanisms leading to creation of various defects will be defined.…”