Maglev trains use magnetic levitation to suspend, guide and propel vehicles with magnets rather than using mechanical methods, such as wheels, axles and bearings. This form of transportation is still in its early stages, but it has the potential to revolutionize the way people travel. The technology is based on the principle of magnetic repulsion and attraction. Magnets on the train repel the track and lift the train off the track. This allows the train to “float” above the track, eliminating friction and allowing for higher speeds and smoother rides. Maglev trains are capable of reaching speeds of up to 500 km/h (310 mph). Currently, the fastest commercially operating maglev train is the Shanghai Maglev Train, in China, which has a top speed of 431 km/h (268 mph). The main advantages of maglev trains are their high speed, low energy consumption and lack of noise pollution. Additionally, they can be used in areas where building traditional railways is not feasible, such as in mountainous terrain. The main disadvantages of maglev trains are the high cost of building the infrastructure, the lack of existing routes and the fact that they are not widely used.