Cross slope is a geometric feature of pavement surfaces; the transversal slope [%] with respect to the horizon. It is a very important safety factor. One task is to make water run off the surface to a drainage system, thereby preventing skid accidents. On straight sections of normal two lane roads, the pavement cross section usually has a roof-shaped double-sided cross slope. In horizontal curves, the cross slope is banked into superelevation, in order to reduce hazardous lateral forces. If the cross slope magnitude oscillates within 1 - 25 meters, the body and payload of high (heavy) vehicles will experience high roll vibration.
