Maglev

The technology for maglev has existed since the 1960's, the first trains weren't really developed and used till the 1980's and only since the 2000's has humanity had high speed maglev trains. The principle for a maglev train is fairly simple, as it runs using the knowledge that like magnetic poles with repel each other. Maglev trains use magnetic poles to oppose the magnetic field enduced by the train. Then the train is propelled forward by another opposing magnetic field.