The designed slope refers to the filled slope, the top of which is higher than the original floor, so that it is structurally divided into an upper slope and a lower slope, and the upper slope refers to the part of the filling within 0.7 m below the bottom of the carriageway, which is the lower embankment refers to the filler below the embankment. The following special dangers and dangers should therefore be taken into account when building embankments: