determined by the computer 116 utilizing a coordinate transformation between at least one of the cameras 112 on the left sensor head 110 l and the common optical target 108 and a second coordinate transform between at least one of the cameras 112 on the right sensor head 110 r and the common optical target 108 since the relationships between each of the cameras 112 on the left sensor head 110 l and optical targets 102 in the associated fields of view fov are known and corresponding information is also known for the cameras 112 in the right sensor head 110 r and optical targets 102 in the associated fields of view fov all measurements may be mathematically transformed into a single common coordinate system and the alignment of the vehicle wheels determined based on the measured transforms to the common optical target 108 these mathematical transformations are well known to those of ordinary skill such as shown in u s pat no 5 724 128 to january in alternate embodiments of the present invention which include optical targets 105 disposed on the runway system 106 the positional relationships or coordinate system transformations between the cameras 112 disposed in the left sensor head 110 l and the cameras 112 disposed in the right sensor head 110 r are determined by the computer 116 the computer 116 is configured to utilize a coordinate transformation between one of the cameras 112 on the left sensor head 110 l and the common optical target 108 and a second coordinate transform between one of the cameras 112 on the right sensor head 110 r and the common optical target 108 since the relationships between each.