Gravity, same as any other train.
Bullet trains are found in Uranus
'Bullet train' is a name coined by the English language media for the Japanese Shinkansen high speed trains. These trains are electrically powered and draw electric current from a VERY high voltage catenary system above the track.
Bullet trains were first invented in japan!
So trains could stay on the track.
smooth track and NO grade crossings. A good suspension helps, especially on curves
"Bullet trains" are just electric trains.
Bullet trains are conventional electric trains, named bullet trains due to their streamlining. They use conventional railroad tracks and electric catenary systems, but built and maintained to very tight tolerances.
The wheels have flanges on the inside edges, they keep the wheels on the rail. The wheels would not stay on the tracks without the flanges.
The bullet train was invented by Hideo Shima. First Bullet Train runs between Osaka and Tokyo (Japan) in 1964.
Shinkasen
in 1589
Yes, bullet trains have wheels. They run on rails, just as conventional railroad locomotives and cars do. The trains that operate by magnetic levitation, the so-called MagLev trains, do not have wheels as they ride on a magnetic cushion.