Global Autonomous Trains Market Size, Share, Trends, & Growth Forecast Report – Segmented By Automation Grade (GoA 1, GoA 2, GoA 3, GoA 4 ), Train (Metros, Monorails, High-speed Trains, Trams, Freight Trains, Suburban Trains), Application (Passenger Trains, Freight Trains), Technology (CBTC, ERTMS, ATC, PTC), By Region Type ( North America, Europe, Asia Pacific, Latin America, Middle East - Africa) – Industry Forecast 2024 to 2029