Method for producing a fixed spatial relationship between a laser scanner and a digital camera for traffic monitoring, comprising the following method steps: - a laser scanner with a laser scanner axis and a digital camera with an optical axis are aligned relative to one another in such a way that a monitoring area defined by the scanning angle area of the laser scanner is completely covered by the object field of the digital camera at a given photo point, - a vehicle driving through the monitoring area is scanned to obtain measured values associated with measurement points in relation to a scanner coordinate system 1 defined by the laser scanner and having polar coordinates, - a recording of the scanned vehicle is triggered by means of the digital camera when the vehicle reaches the photo point, - the measured values which together form an identifiable measurement structure on the vehicle are filtered out, wherein the identifiable measurement structure is an idealised line in the shape of an angle which is presented by measured values and whose measured values are formed by measurement points in only one plane when the monitoring area is horizontally scanned by a laser scanner arranged next to the roadway, or the identifiable measurement structure is a circumferential line of a surface described by measured values, which circumferential line is obtained when the vehicle is vertically scanned by a laser scanner mounted above the roadway and which ideally presents a rectangle, and wherein the surface corresponds to a projection on the vehicle, - the measured values of the measurement structure which relate to the scanner coordinate system 1 are transformed into a transformed coordinate system 2 with the same coordinate origin and Cartesian coordinates, - the measured values of the measurement structure which relate to the transformed coordinate system 2 are transformed into a camera coordinate system 3 defined by the digital camera so that the measurement structure is superimposed on the imaged measurement points of the imaged vehicle. - a laser scanner with a laser scanner axis and a digital camera with an optical axis are aligned relative to one another in such a way that a monitoring area defined by the scanning angle area of the laser scanner is completely covered by the object field of the digital camera at a given photo point, - a vehicle driving through the monitoring area is scanned to obtain measured values associated with measurement points in relation to a scanner coordinate system 1 defined by the laser scanner and having polar coordinates, - a recording of the scanned vehicle is triggered by means of the digital camera when the vehicle reaches the photo point, - the measured values which together form an identifiable measurement structure on the vehicle are filtered out, wherein the identifiable measurement structure is an idealised line in the shape of an angle which is presented by measured values and whose measured values are formed by measurement points in only one plane when the monitoring area is horizontally scanned by a laser scanner arranged next to the roadway, or the identifiable measurement structure is a circumferential line of a surface described by measured values, which circumferential line is obtained when the vehicle is vertically scanned by a laser scanner mounted above the roadway and which ideally presents a rectangle, and wherein the surface corresponds to a projection on the vehicle, - the measured values of the measurement structure which relate to the scanner coordinate system 1 are transformed into a transformed coordinate system 2 with the same coordinate origin and Cartesian coordinates, - the measured values of the measurement structure which relate to the transformed coordinate system 2 are transformed into a camera coordinate system 3 defined by the digital camera so that the measurement structure is superimposed on the imaged measurement points of the imaged vehicle.