Instead of the usual dual grade Laser that emits a laser beam at a constant fall the A.T.S transmits 8 times a second (8 hertz) to the Dozer which allows the elevation and / or the crossfall to vary to the design of a car park, railway curve or race track. The information can be from a CAD (computer aided design) Terramodel or can be surveyed on site then transmitted from the A.T.S to the Dozer.
This machine is ideal for complex S&C (switch & crossing) units where there is a different grade on each different axis.