What is cross slope?

Cross Slope

Cross slope is a geometric feature of pavement surfaces; the transverse slope with respect to the horizon. It is a very important safety factor. Cross slope is provided to provide a drainage gradient so that water will run off the surface to a drainage system such as a street gutter or ditch. Inadequate cross slope will contribute to aquaplaning. On straight sections of normal two lane roads, the pavement cross section is usually highest in the centre and drains to both sides. In horizontal curves, the cross slope is banked into superelevation to reduce steering effort and lateral force required to go around the curve. All water drains to the inside of the curve. If the cross slope magnitude oscillates within 1 - 25 metres, the body and payload of high (heavy) vehicles will experience high roll vibration.

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Some articles on cross slope:

Profilograph
... Many road profilographs are also measuring the pavements cross slope, curvature, longitudinal gradient and rutting ... Lateral friction and cross slope are the key reaction forces acting to keep a cornering vehicle in steady lateral position, while exposed to exciting forces from speed and curvature ... Since friction is strongly dependant on macrotexture, and texture, cross slope as well as curvature can be measured with a road profilographs, road profilographs are very useful to ...
Cross Slope
... Cross slope is a geometric feature of pavement surfaces the transverse slope with respect to the horizon ... Cross slope is provided to provide a drainage gradient so that water will run off the surface to a drainage system such as a street gutter or ditch ... Inadequate cross slope will contribute to aquaplaning ...
Road Pavement Profilometery
... Many road profilers also measure the pavement's cross slope, curvature, longitudinal gradient and rutting ... Lateral friction and cross slope are the key reaction forces acting to keep a cornering vehicle in steady lateral position, while exposed to exciting forces from speed and curvature ... Since friction is strongly dependent on macrotexture and texture, cross slope as well as curvature can be measured with a road profiler, so road profilers are very useful to identify improperly banked ...
Zhang Qing (Gardener) - Meeting Wu Song
... Lu Zhishen passes by Cross Slope after seeing Lin Chong safely to Cangzhou and he stops at the tavern for a rest ... In a later chapter, Wu Song passes by Cross Slope on his way to exile in Mengzhou and he stops at the tavern for a break ... He reaches the tavern at Cross Slope and receive help from Zhang Qing and Sun Erniang ...
Sun Erniang - Meeting Wu Song
... Lu Zhishen passes by Cross Slope after seeing Lin Chong safely to Cangzhou and he stops at the tavern for a rest ... In a later chapter, Wu Song passes by Cross Slope on his way to exile in Mengzhou and he stops at the tavern for a break ... He reaches the tavern at Cross Slope and receives help from Zhang Qing and Sun Erniang ...

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