Car, Automobile, Vehicle, Transportation, Wheel, Machine, Road, Symbol, Sign, Road Sign, Tarmac, Asphalt, Freeway, yield, traffic, low, tracks, stop, clearance, underpasses, train, bridge, caution, distance, placement, passageway, course, track, interval, spacing, mechanism, passage, diaphragm, sagacity, know-how, public transport, underpass, path, wisdom, tunnel, care, judiciousness