The TruckCam Camera Wheel Alignment System uses the centerline principle to determine the position of axles and individual wheels in relation to the vehicle centerline.
The centerline of the vehicle is determined by the self centering frame gauges hanged in the front and rear of the chassis or body.
The reflective targets are placed on an equal distance from this centerline, creating an imaginary line on each side of the vehicle, parallel to the vehicle centerline.
The camera measures distance and position in relation to the front and rear targets. Thanks to this the system software is able to calculate all wheel angles for that particular wheel and axle in relation to the centerline, for example total toe, individual toe, out of square and parallelism between axles.