Magnetism is also used to lift the train off the guideway to reduce friction,diminishing wear and tear where the train meets the guideway.The special coils aboard the train and on the guideway repel each other, making the train float.This repulsion force is so strong that it can lift a moving 10,000-kilogram train 10 centimeters off the guideway.The braking action is accomplished by changing the polarity of the train coils relative to those of the guideway coils, reversing their relationship from one of attraction between two unlike poles to one of repulsion between two like poles.
Japanese National Railway System engineers believe the new maglev trains will be an improvement over the Shinkansen,Not only wll the maglev be faster than the Bullet,it will
be more comfortable and more reliable as well.Since the maglev rides on a magnetic wave,it has a low noise level and a diminished vibration level.This is an important consideration for the people libing in neighboring areas,particularly in a country with such high population density.Low maintenance is another advantage of the maglev train because of the fact that the maglev has no moving his factor virtually eliminates guideway wear and tear and prevents costly break-downs.In addition,much less time will be spent on equipment inspection,track repair,and parts replacement.
The Japanese are still conducting test runs of new prototype maglev train and have been running ummanned maglev prototypes since 1972.In1997.a renite-controlled maglev in Miyazaki,Japan,set a world speed record of 341 miles per hour.