Abstract
In the severe competition with other transit systems speed-up on railway has been carried out to shorten the journey time of trains. In case of conventional narrow gauge lines, the speed-up on curved tracks is effective since there are many small radius curves. On the other hand, wheel lateral forces acting towards the outer rail increase with the speed-up, and it causes the concern on the wear of rail side and wheel flange and still more that on the destruction of track. Therefore various kinds of steering truck have been developed for reducing the wheel lateral force, and many research works have been reported from the viewpoint of trade-off between curving performance and running stability. In the paper, some interesting matters on steering trucks are presented, which have been obtained in the simulation study by authors until now. They are related to the performance of a forced steering truck, an active steering one and a self-steering one and the effects of gauge widening on them, and future possibility of steering truck is discussed.
