Abstract
A mathematical model is presented for obtaining data on reduced costs, which can be used in the optimization of machine sets to improve the recruitment process for mechanized detachments during road construction. The mathematical model for calculating the reduced costs, taking into account the probability coefficients for the use of equipment in the set, is built on the basis of a matrix that includes nine columns for types of machines and six rows for the main road construction technologies. By changing the basic input data, the model allows you to automatically recalculate all data. By applying the minimization criterion, it is possible to choose such a set that the total reduced costs for each set of machines and for each technology would be minimal. Optimization of a set of machines of various sizes for mechanized detachments, when designing roads, will reduce the time for building roads and reduce costs.