12 Vehicles for airport ground support, namely, maintenance platforms, tractors, and motorized carts for transporting freight, passengers or luggage, all fitted with an anti-collision system; vehicles for airport ground support, namely, maintenance platforms, tractors, and motorized carts for transporting freight, passengers or luggage, all fitted with crash detectors and sensors; vehicles for airport ground support, namely, maintenance platforms, tractors, and motorized carts for transporting freight, all fitted with a safety system for controlling the speed and braking; vehicles for airport ground support, namely, platforms, tractors, and motorized carts for transporting freight, all equipped with a system for the automatic control of berthing; self-driving airport runway buses, maintenance platforms, tractors, and motorized carts for transporting freight, passengers or luggage between the terminal and the aircraft; airport runway buses, maintenance platforms, tractors, and motorized carts with lifting cars for transport, and for the embarkation and disembarkation of passengers with reduced mobility; airport runway buses fitted with boarding and alighting stairs for passengers; airport runway maintenance platforms, tractors, and motorized carts for towing, loading, unloading, charging, fueling, replenishment of water, heat or conditioned or heated air or pressurized air for aircraft, and for sanitation drainage; tractors to tow and push aircraft; luggage tractors; tractors and motorized carts for loading and unloading freight for aircraft; aircraft parts, namely, aircraft ramps