## 5 Discussion
Furthermore, there is also the possibility of the analysis of the fundamental parameters, for example, revolutions, torques, powers, etc., on all other components of the drive and transmission mechanism, for example, on the additional gearbox, shafts, differentials, final drives, wheels, etc. However, it has to be mentioned that the created models have their limitations, which were discussed in detail in the article, such as the absence of a hydrodynamic converter in the analytical calculations and the creation of its model based on the analytical methodology. Another limitation is that for the specific type of analysis, considering, for example, temperature dependencies of the analyzed parameters or characteristics, additional inputs have to be added. Similarly, due to the lack of data, in our article, we did not focus on sensor precision, accuracy, noise and related uncertainties and error propagation analysis, which have origin in the data obtained from the sensors, or their influence on the analytical and numerical simulation model. However, if these data were available, they can be integrated into the numerical simulation model. An important fact is that the above-mentioned parameters can be monitored not only as instantaneous values; it is also possible to analyze their dependence on the input conditions. It is also possible to simulate reactions of the system and its components to the various external influences, such as changes in the driver's power requirements, braking of the vehicle, changes in the terrain gradient, changes in the surface or various wind conditions. Furthermore, these parameters can also be analyzed for the different total weights of the vehicle. We can also very easily monitor the reactions of the system and its components to the changes in the characteristics and parameters of the particular groups of the vehicle's drive and transmission mechanism, such as changes in the parameters of the components, the replacement of an entire component (engine, hydrodynamic mechanism, etc. ), changes in the control logic of the components (transmission control unit, cruise control system, engine control unit, etc.) or a change in the parameters defining the behavior of the system (shift map, characteristics of the logic of the cruise control system, etc.). A change in any external or internal parameter can have a significant impact on the behavior of the entire system and its components. Monitoring the impact of the changes in external inputs is very important for the analysis of the behavior of a designed or already manufactured vehicle in the various driving conditions. On the other hand, monitoring the influence of internal inputs is very important for the determination of the ideal configurations of the components of the vehicle itself. Furthermore, if the data related to the precision, accuracy or uncertainty of the particular system components or sensors integrated in the vehicle are available, it would even be possible to evaluate the influence of the errors presented in the control system and to analyze the error propagation. The creation of the database from the obtained data was necessary for the creation of a prediction model of the values of parameters characterizing the dynamic properties of the analyzed vehicle and also for the creation of a prediction model of the values of the vehicle's operational and economic parameters, such as fuel consumption. The creation of this primary gearshift map is a basis for the creation of gearshift maps, which can apply the obtained predicted values to optimize parameters, for example, performance or fuel consumption in fundamental or complex vehicle driving situations. As the simulation model was verified for the ideal conditions, such as constant speed without acceleration or braking, for direct motion without curves or slopes and for driving in not-demanding terrain, any of these changes in the proposed models have to be verified after their implementation into the analytical or numerical model.