During the use of Advanced Driver Assistance Systems (ADAS), drivers can intervene in the active function and take back control due to various reasons. However, the specific reasons for driver-initiated takeovers in naturalistic driving are still not well understood. In order to get more information on the reasons behind these takeovers, a test group study was conducted. There, 17 participants used a predictive longitudinal driving function for their daily commutes and annotated the reasons for their takeovers during active function use. In this paper, the recorded takeovers are analyzed and the different reasons for them are highlighted. The results show that the reasons can be divided into three main categories. The most common category consists of takeovers which aim to adjust the behavior of the ADAS within its Operational Design Domain (ODD) in order to better match the drivers' personal preferences. Other reasons include takeovers due to leaving the ADAS's ODD and corrections of incorrect sensing state information. Using the questionnaire results of the test group study, it was found that the number and frequency of takeovers especially within the ADAS's ODD have a significant negative impact on driver satisfaction. Therefore, the driver satisfaction with the ADAS could be increased by adapting its behavior to the drivers' wishes and thereby lowering the number of takeovers within the ODD. The information contained in the takeover behavior of the drivers could be used as feedback for the ADAS. Finally, it is shown that there are considerable differences in the takeover behavior of different drivers, which shows a need for ADAS individualization.

翻译：在使用高级驾驶辅助系统（ADAS）过程中，驾驶员可能因多种原因干预系统主动功能并重新接管车辆控制权。然而，在自然驾驶场景中，驾驶员主动接管的具体原因尚未得到充分理解。为深入探究这些接管行为背后的动因，本研究开展了实验组测试。17名参与者在日常通勤中使用预测性纵向驾驶功能，并在系统主动运行期间标注其接管原因。本文对记录的接管行为进行分析，并重点阐释其不同成因。研究结果表明，接管原因可分为三大主要类别：最常见的一类旨在调整ADAS在其设计运行域（ODD）内的行为表现，以更好地匹配驾驶员的个人偏好；其他原因包括因超出ADAS的ODD范围而接管，以及对错误传感状态信息的修正。通过实验组问卷分析发现，特别是在ADAS的ODD范围内发生的接管次数与频率对驾驶满意度具有显著负面影响。因此，通过使ADAS行为更贴合驾驶员期望来降低ODD内的接管次数，可有效提升驾驶满意度。驾驶员的接管行为信息可作为ADAS系统的反馈数据。最后，研究显示不同驾驶员的接管行为存在显著差异，这表明ADAS个性化定制具有必要性。