The interaction effects of crumb rubber modified asphalt binders are influenced by several key process parameters. These include the temperature during the mixing process, which affects the dissolution of rubber; the shear rate, which impacts the dispersion of rubber particles; and the duration of mixing, which determines the extent of interaction between the rubber and bitumen. Additionally, the rubber particle size and the type of bitumen used also play crucial roles in modifying the performance characteristics of the asphalt binder.