TY CONF TI ITS MULTI-LEVEL ARCHITECTURE FOR OPTIMIZING TRANSPORTATION SERVICES FOR MASS EVENTS IN AN URBAN ENVIRONMENT KW intelligent transport system KW mass city events KW ITS architecture KW traffic management KW traffic safety KW transport services JO MODERN SYSTEMS AND TECHNOLOGIES IN TRANSPORT: PROBLEMS AND PROSPECTS - 2025 AU Hao, W.. AU Bulatova, O.Y. AU Feofilova, A.A. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov