Not all trains are the same: these are just some of the variations around the world.
Monorail
A monorail train runs on a single rail, instead of on a track or two rails. It is either suspended from the rail or straddles it. The Tokyo Monorail in Japan carries 100 million passengers a year. There are also monorails in Malaysia, Australia and the USA. Several American airports have monorails, as does Disney World in Florida.
Maglev
The name magl...
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