Railroad-vehicle truck frame with transoms having flanges and central webs

In a railroad-vehicle truck with a frame that yields under torsion and comprises transoms and side frames welded into an H-type frame, the improvement wherein the side frames are resistant to torque over their total length and have a depressed section at the middle of the truck having upper and lower flanges, wherein the transoms yield under torsion and comprise T sections, having flanges and central webs, that are at obtuse angles to one another and that abut at their ends in a line of intersection which is positioned between the flanges of said transoms and along which the webs are welded together, wherein each of the flanges of the transoms are fastened to one of the upper and lower flanges on the side frames and further comprising helical compression springs positioned on the upper flanges of the depressed section of the side frames, a bolster supported on the springs, axle bearings, axle guides connecting the axle bearings to ends of the side frames comprising rubber thrust springs, and load-dependent side bearings positioned between at least some of the helical compression springs and the bolster.