Moscow subway system formation
Problem statement. Historical analysis of Moscow subway network let to identify the evolution of step-by-step lines formation in conjunction with planning and transport structure of city development. Results. The analysis of Moscow metro system development allowed to distinguish еру main stages of evolution: 1<sup>st</sup> Stage is the emergence and operation of the first line in historical center of the city, 2<sup>nd</sup> Stage is the formation of metro network, the emergence of nodes with major railway stations, 3<sup>rd</sup> Stage is the organization of combined system with intercity railways and large transport hubs. Conclusions. The significance of the results for construction industry consists of an identification of the correspondence of the radial-ring Moscow planning structure type and the radial-ring subway network type, which is an optimal solution for tracing lines in the current urban planning situation.