Abstract: A straightening arrangement for straightening a chassis frame, having a plurality of bridges (11). Each bridge has a horizontal beam (12) and a vertical beam (13) whose lower end is fixed to the horizontal beam, a floor anchorage which detachably fastens the bridge to the floor, a device (15) arranged horizontally on the beam construction, and a chain attachment fitting (18). The bridge is locked in at least two directions, perpendicular to one another and also to the chassis frame. The horizontal device is arranged, in the straightening of a chassis frame which is bent in the lateral direction, to apply a horizontally directed force. The chain attachment fitting is arranged in the straightening of a chassis frame, which is bent in the vertical direction or is crooked, to secure a chain that is attached to the chassis frame.

Abstract: Method for determining wheel alignment of a vehicle, which vehicle comprises at least one wheel axle (12, 13, 14) having an axle end with at least one wheel member (2a-b, 3a-b, 4a-b) at a respective longitudinal side of the vehicle. The method comprises steps for determining the out of square of the wheel axle in relation to the longitudinal geometric centerline of the vehicle. A system for carrying out the method is also described.