TY JOUR TI Analysis of Global Trends in the Development of Intermodal Transfer Hubs Based on International Airports KW Intermodality KW tunnel KW underground terminal KW interaction of air and rail transport KW light rail transport KW metro KW aeroexpress KW high-speed lines JO Proceedings of Petersburg Transport University AU Kavkazskiy, V.N. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"