Type segmentation distinguishes the mechanical architecture of Passenger Boarding Bridges for Airport operations. The primary categories are fixed bridges, which are permanently attached to terminal structures and offer limited positional flexibility, and retractable (or telescopic) bridges, which incorporate hydraulic or electromechanical systems to extend and retract according to aircraft door geometry. Fixed bridges contribute a modest share of capital expenditure due to lower initial cost but generate higher operational constraints, especially at airports with mixed aircraft fleets. Retractable bridges, by contrast, command a larger portion of market value because they support a broader range of aircraft types, improve turnaround efficiency, and reduce gate‑allocation conflicts. A secondary sub‑type, the dual‑mode bridge, combines fixed and retractable elements to serve both narrow‑body and wide‑body aircraft from a single gate, thereby enhancing asset utilization. Understanding these type distinctions is essential for quantifying the overall market size, as each architecture entails distinct procurement cycles, maintenance regimes, and upgrade pathways within the Passenger Boarding Bridges for Airport segmentation.