World

Subways around the world

Updated 10:20 PM ET, Mon September 25, 2017
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Passengers on a Mass Transit Rail (MTR) train in Hong Kong. MIKE CLARKE/AFP/AFP/Getty Images
The MTR is renowned for being immaculately clean, well-signposted, cheap, and punctual. There's free Wi-Fi in every station in Hong Kong, facilities such as tactile flooring and Braille plates for travelers with disabilities and public washrooms, shops, banks and takeaway food outlets inside many stations or close to their exits. DALE DE LA REY/AFP/AFP/Getty Images
The London Underground, also known as "The Tube," is more than 150 years old -- making it the oldest metro in the world. Jack Taylor/Getty Images Europe/Getty Images
The London Tube was the world's first underground metro, opening in 1863. Since then, air-conditioned carriages have been introduced, alongside intermittent Wi-Fi signal. The Underground services more than 1 billion journeys per year. OLI SCARFF/AFP/AFP/Getty Images
The rail and subway network within the Japanese capital is a vast system with 17 lines in total -- 13 of which make up the city's subway. CNN
A poster informing commuters of a women's-only carriage is displayed on a subway train in Tokyo on June 2, 2017. KAZUHIRO NOGI/AFP/AFP/Getty Images
New York City's MTA subway lines are doubled up so all local and express trains can run simultaneously along the same routes, 24 hours a day. Even when carrying out major work on a line, only a single track is decommissioned, leaving a reduced but still-open service.
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Passengers on the New York City subway. Spencer Platt/Getty Images North America/Getty Images
The French capital has some of the most distinctive Metro branding in the world. JACQUES DEMARTHON/AFP/AFP/Getty Images
With more than 1.5 billion passengers a year, Paris Metro is one of the top-five busiest city-rail services in the world. GUARDIAN NEWS & MEDIA LTD/AFP/Getty Images
The ornate interior of Komsomolskaya Metro Station on the Koltsevaya Line of the Moscow subway. The station was opened in 1952. KIRILL KUDRYAVTSEV/AFP/AFP/Getty Images
Subway passengers walk through Mayakovskaya station in Moscow. KIRILL KUDRYAVTSEV/AFP/AFP/Getty Images
Commuters wait to enter a subway station during the morning rush hour in Beijing. Despite some five million private vehicles in Beijing, public transport faces heavy congestion on a daily basis as most of the city's 21.5 million people head to work. ED JONES/AFP/AFP/Getty Images