The selection of an asphalt for paving mixtures is governed by the need to provide adequate resistance to shifting and cracking of the pavement. The cracking resistance of an asphalt pavement can be judged (for example) by the magnitude of its maximum deformation (before breaking) in comparison with the design-allowable flexure of the pavement at 0~ the cracking resistance can also be judged by the levels of the structural transition temperatures, i.e., the temperature of maximum strength Tmax R or the temperature for mechanical glass transition, under the condition of equality of indices characterizing the breakdown of asphalt pavements in the service range of temperature/time conditions. The resistance to shifting can be measured in terms of the maximum failure loads at high temperatures.