Train Control and Management System Market Size, Share, Growth, Trends, and Global Industry Analysis: By Component (Vehicle Control Unit, Mobile Communication Gateway, Human machine Interface (HMI), Others), By Solution (Positive Train Control (PTC), Communication-Based Train Control (CBTC), Integrated Train Control, Others), By Connectivity (Wi-Fi, GSM R, Tetra), By Train Type (Metro & High Speed, Electric Multiple Units, Diesel Multiple Units) and Region Forecast 2020-2031