The key process parameters influencing cold adhesive modified bitumen include temperature, mixing time, and the ratio of adhesive to bitumen. Temperature affects the viscosity and workability of the mixture, while adequate mixing time ensures uniform dispersion of the adhesive. The adhesive-to-bitumen ratio is crucial for achieving desired performance characteristics, such as adhesion strength and flexibility. Additionally, the quality of the raw materials and the presence of additives can also significantly impact the final properties of the modified bitumen.