PURPOSE: To provide similar riding comfort both in the curved section and in the straight section by controlling the movement of a railway vehicle body in the right-to- left direction so that the right clearance between the stock body and right stopper may be equal to the left clearance between the vehicle body and a left stopper when the velhile passes through the curved section.

CONSTITUTION: When the signal on the curve is received by a controller 9 by a point detecting signal 6, the right and left vibratory acceleration detected by right and left vibratory accelometer 7, 8 in a railway vehicle is received by the controller 9. The received right and left vibratory acceleration is degitalized by an A/D converter 10 in the controller 9, and only the stationary component passing through a low pass filter 11 is extracted. The control output is defined as the stationary component multiplied by the gain in a control amount operating device 12, and analogized by a D/A converter 13, and outputted to the respective proportional pressure control valves 15, 16, 17, 18 through an amplifler 14. Then, the respecive proportional pressure control valves 15, 16, 17, 18 are supplied or discharged based on the control output and compound type pneumatic cylinders 19, 20 are driven to keep vehicle body 1 in the neutral position.