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Abstract

A method of milling the surface of the traffic area in at least two layers, in which the first layer is milled and at the same time the spatial position (X, Y, Z) of the road milling machine and the cross slope of the milling drum are measured continuously at each moment of milling the first layer, and the measured data is stored in the database of a 3D guidance computer. From the stored measured data representing the spatial positions (X, Y, Z) of the road milling machine and the cross slopes of the milling drum, a digital 3D model of the surface of the traffic area after milling the first layer is calculated in the 3D guidance computer. Subsequently, after milling the first layer using the digital 3D model of the surface of the traffic area after milling the first layer and the obtained digital 3D model of the desired target surface of the traffic area or obtained the digital differential model of the milling depths, at least the second layer is milled. The device for performing the method is also described.

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