Development and qualitative evaluation of new concepts to promote level-compliant driver behavior in automated driving.

Within the BMWK [1]-funded project KARLI, an HMI system for automated driving is developed to ensure level-compliant driver behavior considering SAE Levels 0 - 4 [2]. The goal of KARLI is to develop a new, holistic system that ensures safe driving by the user-centered, iterative development process. Design Thinking methods were used to develop ideas and concepts for the holistic promotion of level-compliant driver behavior. The ideas were elaborated into concepts (e.g. learning systems, gamification, trust calibration) and presented as low-fidelity prototypes in the form of user narratives. These are textbased scenarios in which the concepts are made tangible for the user. The aim of the qualitative study is to evaluate the concepts developed to promote level-compliant driver behavior in terms of acceptance and potential for further development. By the user narratives the concepts were evaluated in a user study. Twelve guided individual interviews (M = 74 minutes) were conducted. The sample covers different groups of people with their specific needs. The analysis was based on the qualitative content analysis [3]. The results show, among other things, mixed preferences. Based on the results, a combined system of a learning system with gamification/classic intervention or trust calibration/classic intervention and an emergency stop is recommended. This paper provides insights into the usercentered approach of the KARLI research project and reports on the key findings of the qualitative evaluation study. Based on the key findings, a recommendation and an outlook for ongoing user-centered development will be provided.