This Hamburg Wheel Tracker Determination of rutting and water sensitivity of Hot Mix Asphalt (HMA), permanent deformation of asphalt mixture under moving load, by measuring the rutting depth of asphalt mixture and the number of loading times at failure, to determine due to aggregate structure Insufficient binder strength or early damage caused by water damage can be used to evaluate the effect of water damage on asphalt mixtures because the specimens can be immersed in water at a certain temperature throughout the test.