A method for aligning a vehicle service system relative to a vehicle positioned in a service area, wherein the vehicle service system comprises: a calibration structure including a calibration assistance device, configured to calibrate an ADAS sensor of an advanced driver assistance system of the vehicle; an apparatus for measuring the alignment of the vehicle and on which an apparatus camera for capturing images is mounted; the method comprising the following steps: - applying a front wheel target and a rear wheel target on a front wheel and on a rear wheel of the vehicle, respectively, wherein the front wheel and the rear wheel are located on a first side of the vehicle; - positioning the calibration structure and the apparatus at a position in front of the vehicle; - capturing an image through the apparatus camera, wherein the image represents the front wheel target and the rear wheel target; - processing the image to derive information useful for positioning the calibration structure relative to the vehicle, characterized in that the method further comprises the following steps: - placing a positioning device at an operating position, spaced from the calibration structure, in front of the apparatus and alongside the first side of the vehicle, wherein a device target is mounted on the positioning device; - viewing the device target mounted on the positioning device, through the apparatus camera; - viewing the device target, through a structure camera which is associated with the calibration structure, or vice versa, - viewing a structure target associated with the calibration structure, through a device camera which is associated with the positioning device. a calibration structure including a calibration assistance device, configured to calibrate an ADAS sensor of an advanced driver assistance system of the vehicle; an apparatus for measuring the alignment of the vehicle and on which an apparatus camera for capturing images is mounted; the method comprising the following steps: - applying a front wheel target and a rear wheel target on a front wheel and on a rear wheel of the vehicle, respectively, wherein the front wheel and the rear wheel are located on a first side of the vehicle; - positioning the calibration structure and the apparatus at a position in front of the vehicle; - capturing an image through the apparatus camera, wherein the image represents the front wheel target and the rear wheel target; - processing the image to derive information useful for positioning the calibration structure relative to the vehicle, - applying a front wheel target and a rear wheel target on a front wheel and on a rear wheel of the vehicle, respectively, wherein the front wheel and the rear wheel are located on a first side of the vehicle; - positioning the calibration structure and the apparatus at a position in front of the vehicle; - capturing an image through the apparatus camera, wherein the image represents the front wheel target and the rear wheel target; - processing the image to derive information useful for positioning the calibration structure relative to the vehicle, characterized in that the method further comprises the following steps: - placing a positioning device at an operating position, spaced from the calibration structure, in front of the apparatus and alongside the first side of the vehicle, wherein a device target is mounted on the positioning device; - viewing the device target mounted on the positioning device, through the apparatus camera; - viewing the device target, through a structure camera which is associated with the calibration structure, or vice versa, - viewing a structure target associated with the calibration structure, through a device camera which is associated with the positioning device. - placing a positioning device at an operating position, spaced from the calibration structure, in front of the apparatus and alongside the first side of the vehicle, wherein a device target is mounted on the positioning device; - viewing the device target mounted on the positioning device, through the apparatus camera; - viewing the device target, through a structure camera which is associated with the calibration structure, or vice versa, - viewing a structure target associated with the calibration structure, through a device camera which is associated with the positioning device.