A monorail is like a train . Trains have two sets of wheels that balance on a railway track , but monorails balance on one rail . Monorails are often transport people around cities . Some monorails and trains use magnets to hover on their rails. They are called maglev trains . This reduces friction between the train and the rail. The first monorail was invented in the 19th century. The monorail has a different wheel system than other trains . Instead of being on the rail , it goes beside the rails . Monorails are usually complicated and expensive, so most places do not have them.

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A Website About Monorails

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