The potential for non-driving related tasks (NDRTs) within the context of automated driving prompts the question of what activities might be both appropriate and safe. A unique Risk Assessment Model (RA-Model) of NDRTs in SAE Level 3 vehicles has been developed, based on several cornerstones: (i) sensory-visual load – encompasses sensory modality and visual load; (ii) overall mental load – refers to mental load and interruptibility; (iii) manual load – concerns the position of driver’s body and hands availability. RA-Model is based on a three-step process: (i) qualitatively assessing the key characteristics of the NDRT; (ii) determining the quantitative level of all three types of loads that enter the overall evaluation of the NDRT; (iii) to carry out an overall assessment of the NDRT into a three-dimensional (3D) model. The novelty of this approach can be summarized as a unique rating system using several criteria which leads to the determination of suitability of NDRTs. The benefits of RA-Model are threefold. Firstly, for a safe approach in the preparation of legal environment for SAE Level 3 vehicles; secondly, for manufacturers of vehicles to fine-tune the setup of human machine interface (HMI); and lastly, for high-quality awareness campaigns accompanying an advent of conditionally automated vehicles.