Bus Rapid Transit Vehicle Market Size, Share Demand Report By Propulsion Type (Diesel BRT Vehicles, Hybrid BRT Vehicles, Electric BRT Vehicles, CNG BRT Vehicles, Hydrogen Fuel Cell BRT Vehicles), By Vehicle Type (Standard Buses, Articulated Buses, Double-Articulated Buses, Mini BRT Buses), By Application (Urban Public Transport, Airport Transit Systems, Intercity Rapid Transit, Smart City Transportation), By End User (Government Transport Authorities, Private Transit Operators, Public-Private Partnerships) By Region & Segment Forecasts, 2026–2034