The technology in the area of automated vehicles is gaining speed andpromises many advantages. However, with the recent introduction ofconditionally automated driving, we have also seen accidents. Test protocolsfor both, conditionally automated (e.g., on highways) and automated vehicles donot exist yet and leave researchers and practitioners with differentchallenges. For instance, current test procedures do not suffice for fullyautomated vehicles, which are supposed to be completely in charge for thedriving task and have no driver as a back up. This paper presents currentchallenges of testing the functionality and safety of automated vehiclesderived from conducting focus groups and interviews with 26 participants fromfive countries having a background related to testing automotive safety-relatedtopics.We provide an overview of the state-of-practice of testing active safetyfeatures as well as challenges that needs to be addressed in the future toensure safety for automated vehicles. The major challenges identified throughthe interviews and focus groups, enriched by literature on this topic arerelated to 1) virtual testing and simulation, 2) safety, reliability, andquality, 3) sensors and sensor models, 4) required scenario complexity andamount of test cases, and 5) handover of responsibility between the driver andthe vehicle.
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