Blurred view of passengers boarding suburban train, Germany

Passengers at subway station, Arbatskaya, Arbatsko–Pokrovskaya Line, Moscow, Russia

Blurred view of people crossing tram track, Frankfurt Central Train Station, Frankfurt, Hesse, Germany

Woman walking out of subway, Berlin, Germany

Train in motion at metro station, Tokyo Prefecture, Japan

Woman commuting in a public station

People walking from street level down into a subway station

Front view of women reading map and buildings in background

Travelers walking at metro station

Travelers standing at metro station

Travelers waiting at metro station

Blurred view of passengers walking in subway station