Resumen
The transport process is a summary of time and substantive processes that make up the transport chain. The requirement of relocation exists at the beginning of each transport process in passenger transport. Finding the appropriate connection, familiarity with the transport conditions, the purchase of travel documents and their subsequent validation are other activities involving the transport process. One form of validation can be ensured by the responsible employees of the carrier. The second form is a creation of self-service system on the track section. Economic matters of carrier points to disadvantages of validation the travel documents by train crew in comparison to the tracks where is implemented the self-service system. Paper analyzes the possibilities of validation machine placement for the validation of travel documents, which can be placed at railway stations and stops or in vehicles in low demand areas of railway transport. The paper analyzes the factors that affect the required quantity of validation machines at the railway stations and stops or in railway vehicles, depending on the parameters of railway infrastructure (number of tracks, maximum track speed, number of railway stations and stops on the track and their average mutual distance), railway vehicle fleet (construction of the vehicles, number of doors, transport capacity) and transport technology (time of train sets circulation, transport distance, travel speed, creating timetable). Based on the analysis of these factors paper provides the methodology for calculating the quantity of validation machines in railway transport. The methodology is applied to the model.