Abstract: A stabilizer for providing railway car wheel-truck anti-hunting stabilization with automatic stabilizer releasing at rail curves. This stabilizer comprises first and second anchors attachable respectively to the car body and truck, the stabilizer having an intermediate section having a movement preventing module preventing destructive truck hunting movement of the anchors with respect to each other in at least one direction during straight track travel, but permitting the anchors to freely move with respect to each other when the truck reaches a section of curved track.