Abstract: A frameless self-steering radial wheeled support vehicle for a railroad car body includes:(a) a pair of wheelsets,(b) a support at opposite ends of each wheelset for independently mounting a railroad car body on each end of the wheelset,(c) resilient shear pads for mounting each support upon an end of a wheelset, which pads permit both lateral and yaw movement of a wheelset relative to its supports, and(d) a linkage connecting adjacent ends of each wheelset constraining the wheelsets to yaw in opposite sense and permitting lateral movement of one wheelset relative to the other.