Marking line removing method for road traffic engineering

The invention provides a marked line clearing method for road traffic engineering, which comprises the following steps of: cleaning a marked line on a road in the radial direction in advance along the path direction of the marked line, removing foreign matters on the marked line, rolling a guide wheel forwards on the marked line, and ensuring that the guide wheel is always in rolling contact with the surface of the marked line under the action of self weight; the grinding wheel is integrally and fixedly connected to the rear side of the guide wheel and used for grinding and removing the marked line, it is guaranteed that when the guide wheel ascends along the marked line path, the grinding wheel ascends and moves at the same height, and the depth of the part, below the surface of the marked line, of the grinding wheel is not smaller than two times of the thickness of the marked line. And after the marked line is polished and removed by the grinding wheel, a high-pressure water curtain is adopted to be oblique