city, transit, streetcar
london underground, tube, transport
lisbon, tram, portugal
highway, road, trucks
train, subway, escalator
taxi, sign, automobile
ferrybridge, power station, light trails
train, passenger, subway station
train, railroad, transport
station, escalator, stairs
london, metro, architecture
monochrome, railroad, transport
businessman, boxes, transport
train, railway, locomotive
transport, plane, flight
taxi, road, traffic
propellers, aircraft, detail
ferry, passengers, sea
truck, vehicles, transport
