Machines for use in relation to airports, seaports and road transport, namely, docking simulators, luggage sorting systems and airport baggage carts, for airports, seaports and road transport, for airplanes, vessels, trailers, large tonnage trailers, custom-built trailers, military vehicles, aircraft recovery, passenger boarding bridges, ground support equipments, preconditioned air units, rooftop, power units, visual guidance docking systems, shore ramps, fenders, airport terminals, seaport ...