Objective: to develop a mathematical model for calculating the normative, actual and deficit values in twenty–foot equivalent (hereinafter referred to as DFE) in a given container train (hereinafter referred to as KP), to formulate an algorithm for calculating DFE in KP.
Methods: calculations using the Excel software environment were used in the segment of calculating the occupancy rate of a container train in the TEU, the percentage of occupancy compared to the standard value of the TEU.
Research results: based on the results of the work, a methodology for calculating the DFE in the KP was formulated, a mathematical model for calculating the twenty-foot equivalent of a given container train was developed.
Practical significance: it has been revealed that a new element in the calculations of the container train parameter should be considered the automatic calculation of the values of DFE (normative, actual, deficit values) for the entire container train (and not on a separate platform car) with the display of such important parameters as the number of wagons in the composition, the total number of containers loaded on wagons. A step-by-step description of the processes of calculating the DFE of a given composition of KP is performed. As a result of the research, a software product for calculating KP occupancy rates is proposed.