Railway Tunnel Monitoring Market Size, Share, and Industry Analysis, By Monitoring Type (Structural Health Monitoring, Geotechnical Monitoring, Environmental Monitoring, Seismic & Vibration Monitoring, and Water Leakage & Drainage Monitoring), By Component (Hardware, Software, and Services), By Sensor Technology (Fiber Optic Sensors, Wireless Sensors, MEMS Sensors, LiDAR-based Monitoring Systems, and Thermal Imaging Sensors), By Tunnel Type (High-Speed Rail Tunnels, Metro & Urban Transit Tunnels, Freight Rail Tunnels, and Underwater/Subsea Rail Tunnels), and Regional Forecast till 2034