METHOD AND ARRANGEMENT FOR DETERMINING A CONDITION OF A ROAD SURFACE

A method for determining a classification of a condition of a road surface for vehicle traffic includes: defining a reference surface of the road surface ahead; illuminating the reference surface with a light source on the vehicle; detecting light reflected off the reference surface; and determining classification of the condition of the road surface by analyzing detected information related to the reference surface. Furthermore, the method includes: illuminating the reference surface using laser or LED light; providing image information for the reference surface by detecting the reflected light with a Lidar unit; providing further image information for the reference surface by scanning the reference surface using an RGB sensor; and classifying the road surface by combining image information from the Lidar unit and the RGB sensor. The disclosure also relates to an arrangement for determining a classification of a condition of a road surface for vehicle traffic.