Seoul comes out on top, followed by Madrid and Shanghai. Closer to home the London Underground comes 5th and Paris takes the last spot. Accessibility was assessed with a points-based system. Each subway was given points for the number of stations with step-free access, lifts and escalators.
The list was topped by the reliable, safe and comfortable public transport in Berlin. 97 percent of Berliners raved about their city's transport network, with their metro U-Bahn offering travellers 175 stations across nine simple-to-navigate lines.
1: Shanghai Maglev - 460 kph/286 mph (China)The world's fastest public train is also unique – it's the only link in the world currently carrying passengers using magnetic levitation (Maglev) rather than conventional steel wheels on steel rails.
New York City SubwayIt is the most complex network in the world with 472 active stations serving 27 subway lines. Until 1940, no official map of the subway system existed. The most influential map was made by graphic designer Massimo Vignelli in 1972.
How NYC's Second Avenue Subway Became the World's Most Expensive Line. The Manhattan transit expansion's multibilllion-dollar price tag reflects the spiraling complexity of US construction practices, a team of NYU researchers says.
The Cincinnati Subway was a partially completed rapid transit system beneath the streets of Cincinnati, Ohio. Although the system only grew to a little over 2 miles (3.2 km) in length, its derelict tunnels and stations make up the largest abandoned subway tunnel system in the United States.
Originally opened between Paddington and Farringdon Street in 1863, the London Underground in the UK is the oldest metro in Europe and the world. Also the world's first underground metro system, the Metropolitan Railway was operational between 1863 and 1933 until it was merged with the London Passenger Transport Board.
The Middleton Railway is the world's oldest continuously working railway, situated in the English city of Leeds. It was founded in 1758 and is now a heritage railway, run by volunteers from The Middleton Railway Trust Ltd.
Riding the subway is one of the easiest and most convenient ways to get around the city. For most riders, the subway fare is $2.90. Reduced fares are available for people 65 and older, people with disabilities, and low-income New Yorkers. Learn more about fares.