Members of the Trilateral Working Group on Automation in Road Transportation (ART WG) have been working to address the complexity of impacts caused by automated driving. They are setting up a high-level impact assessment framework to coordinate the impact assessments performed in the field of automated driving. The paper presents this framework. It gives recommendations for classifying automation implementations and determining impact areas to be assessed. It also presents the impact mechanisms through which automated driving is expected to impact our life, covering both direct and indirect impacts. In addition, recommendations are provided for experimental procedure, simulation approach and data sharing.