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El Jouhri, A. (author), El Sharkawy, A. (author), Paksoy, H. (author), Youssif, O.K.S.A. (author), He, X. (author), Kim, S. (author), Happee, R. (author)Introduction: SAE Level 3 is known as conditional driving automation. As long as certain conditions are met, there is no need to supervise the technology and the driver can engage in non-driving related tasks (NDRTs). However, a human driver must be present and alert to take over when the automation is facing its system limits. When such an...journal article 2023
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Nordhoff, S. (author), Lee, John D. (author), Calvert, S.C. (author), Berge, S.H. (author), Hagenzieker, Marjan (author), Happee, R. (author)Tesla's Full Self-Driving Beta (FSD) program introduces technology that extends the operational design domain of standard Autopilot from highways to urban roads. This research conducted 103 in-depth semi-structured interviews with users of Tesla's FSD Beta and standard Autopilot to evaluate the impact on user behavior and perception. It was...journal article 2023
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Mullakkal-Babu, F.A. (author), Wang, M. (author), van Arem, B. (author), Happee, R. (author)We present a simulation-based approach to assess the safety impacts of vehicles equipped with Automated Driving Systems (ADS) in mixed traffic with Human-driven Vehicles (HV). Specifically, we compare two generic longitudinal strategies of ADS to handle a cut-in: Reactive ADS acting only when the cut-in vehicle crosses the target lane boundary,...journal article 2020
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Stapel, J.C.J. (author), El Hassnaoui, Mounir (author), Happee, R. (author)Objective: To investigate how well gaze behavior can indicate driver awareness of individual road users when related to the vehicle’s road scene perception. Background: An appropriate method is required to identify how driver gaze reveals awareness of other road users. Method: We developed a recognition-based method for labeling of driver...journal article 2020
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Kooijman, L. (author), Happee, R. (author), de Winter, J.C.F. (author)In future traffic, automated vehicles may be equipped with external human-machine interfaces (eHMIs) that can communicate with pedestrians. Previous research suggests that, during first encounters, pedestrians regard text-based eHMIs as clearer than light-based eHMIs. However, in much of the previous research, pedestrians were asked to imagine...journal article 2019
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Cabrall, C.D.D. (author), Eriksson, Alexander (author), Dreger, F.A. (author), Happee, R. (author), de Winter, J.C.F. (author)This work aimed to organise recommendations for keeping people engaged during human supervision of driving automation, encouraging a safe and acceptable introduction of automated driving systems. First, heuristic knowledge of human factors, ergonomics, and psychological theory was used to propose solution areas to human supervisory control...journal article 2019
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de Clercq, Koen (author), Dietrich, Andre (author), Nuñez Velasco, J.P. (author), de Winter, J.C.F. (author), Happee, R. (author)Objective: In this article, we investigated the effects of external human-machine interfaces (eHMIs) on pedestrians’ crossing intentions. Background: Literature suggests that the safety (i.e., not crossing when unsafe) and efficiency (i.e., crossing when safe) of pedestrians’ interactions with automated vehicles could increase if automated...journal article 2019