Underground Train

• The top speed of the world's fastest underground train, located in Guangzhou, China is 83 miles/hour. The average speed of the underground train is 20.5 miles/hour.
• The world's busiest subway systems are ( passengers in billions )
• Tokyo          3.5   billions
• Moscow        2.4   billions
• Seoul           2.1   billions
• New York     1.6   billions
• Paris            1.5   billions
• Beijing         1.5   billions
• Mexico City   1.4  billions
• Hong Kong   1.3  billions
• Shanghai      1.3  billions
• London        1.1  billions
• Subways Developements
• 1863            London subway introduced - first system in the world
• 1870            New York  
• 1897            Boston
• 1900            Paris
• 1913            Bueno Aires
• 1927            Tokyo
• 1967            Air Conditioned Trains introduced in New York
• 1976            First Automated System in San Franscisco
• 1990            Los Angeles