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Shock absorber used to prevent railcars and locomotives from swaying excessively from side to side
This article is about rail transport. For aircraft flight control, see Yaw damper.
Yaw damper between cars of an E259 series EMU operated by JR East in Japan, June 2009Another type of yaw damper, installed on a Meitetsu 2200 series bogie.
A yaw damper is a transverse mounted shock absorber used to prevent railcars and locomotives from swaying excessively from side to side. Yaw dampers prevent locomotives and passenger railcars from striking station platforms as they roll past them and reduce the gap that must be left between the railroad vehicle and the platform, improving safety.
