[{"n": "Aircraft", "u": "/e/transportation-engineering/aircraft/", "s": "A vehicle that flies by gaining support from the air."}, {"n": "Aircraft carrier", "u": "/e/transportation-engineering/aircraft-carrier/", "s": "Mobile seagoing airbase projecting naval air power worldwide."}, {"n": "Aircraft engine", "u": "/e/transportation-engineering/aircraft-engine/", "s": "Power component of aircraft propulsion systems."}, {"n": "Airline", "u": "/e/transportation-engineering/airline/", "s": "Companies providing regular air transport for passengers or freight."}, {"n": "Airplane", "u": "/e/transportation-engineering/airplane/", "s": "Fixed-wing aircraft propelled by thrust, from the Wright brothers to modern jets."}, {"n": "Airport", "u": "/e/transportation-engineering/airport/", "s": "An aerodrome with extended facilities for commercial air transport."}, {"n": "Airship", "u": "/e/transportation-engineering/airship/", "s": "First powered, controlled aircraft; declined after high-profile accidents."}, {"n": "Balloon (aeronautics)", "u": "/e/transportation-engineering/balloon-aeronautics/", "s": "Unpowered aerostat using buoyancy for flight."}, {"n": "Barge", "u": "/e/transportation-engineering/barge/", "s": "Flat-bottomed boat without mechanical propulsion, used for cargo."}, {"n": "Boat", "u": "/e/transportation-engineering/boat/", "s": "A watercraft smaller than a ship, used for transport and recreation."}, {"n": "Cable transport", "u": "/e/transportation-engineering/cable-transport/", "s": "Cable transport uses cables to move passengers and goods."}, {"n": "Canoe", "u": "/e/transportation-engineering/canoe/", "s": "Lightweight watercraft used globally for transport, trade, competition, and recreation."}, {"n": "Carriage", "u": "/e/transportation-engineering/carriage/", "s": "Horse-drawn vehicle for passengers, once a principal road transport."}, {"n": "Cart", "u": "/e/transportation-engineering/cart/", "s": "Two-wheeled vehicle central to ancient and modern transport."}, {"n": "Crane (machine)", "u": "/e/transportation-engineering/crane-machine/", "s": "A machine for lifting and moving heavy objects using mechanical advantage."}, {"n": "Cycling", "u": "/e/transportation-engineering/cycling/", "s": "Cycling is a global activity for transport, sport, and recreation."}, {"n": "Cargo", "u": "/e/transportation-engineering/cargo/", "s": "Goods transported by land, water, or air for commercial gain."}]