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Flexible pavement structures are subjected to heavy traffic loading and repetition of such loading deteriorates the pavement. Fatigue cracking and permanent deformation (rutting) in pavement layers are the results of this deterioration. These problems arise due to improper characterization of asphalt binder. The conventional testing procedure does not provide deeper picture about behaviour of asphalt. It is required to characterize the asphalt after making some polymer modification and by using some advance testing protocol. This paper tries to evaluate the temperature susceptibility behavior of virgin and polymer modified asphalt and suggests some practical implication considering local industry use. Six polymer modified asphalt samples were prepared in the laboratory and tested with two virgin grades and one factory polymer modified sample using Dynamic Shear Rheometer (DSR). The testing results revealed that polymer modification has significant impact on reheological properties of asphalt binder. Viscosity-temperature susceptibility changes with the addition of polymer which makes asphalt suitable to use in warmer and colder regions in order to control the various distresses in flexible pavements. The finding of this paper would be helpful for local road construction industry for characterization of locally available asphalts and their modified versions.