Begmatov Pardaboy Abdurakhimovich, Associate Professor Eshonov Farhod Faizullaevich, Senior Lecturer 2024. 7.1 ANALYSIS OF METHODS OF CALCULATION OF PERIODICITY OF DEFECTOSCOPIC DIAGNOSTICS OF RAIL CONDITION IN THE TRACK. Innovative technologies in construction Scientific Journal. 7, 1 (May 2024), 3–5.