Searched for: author:"Happee, R."
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Dialynas, G. (author), Happee, R. (author), Schwab, A.L. (author)
With the resurgence in bicycle ridership in the last decade and the continuous increase of electric bicycles in the streets a better understanding of bicycle rider behaviour is imperative to improve bicycle safety. Unfortunately, these studies are dangerous for the rider, given that the bicycle is a laterally unstable vehicle and most of the...
journal article 2019
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Stapel, J.C.J. (author), Mullakkal Babu, F.A. (author), Happee, R. (author)
Driver mental workload is an important factor in the operational safety of automated driving. In this study, workload was evaluated subjectively (NASA R-TLX) and objectively (auditory detection-response task) on Dutch public highways (∼150 km) comparing manual and supervised automated driving in a Tesla Model S with moderators automation...
journal article 2019
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de Clercq, G.K. (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
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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 Winter, J.C.F. (author), Dodou, D. (author), Happee, R. (author), Eisma, Y.B. (author)
Vehicles are increasingly equipped with sensors that measure the state of the vehicle and surrounding road users. Although most of these sensor data currently remain local to the vehicle, the data could be shared with the aim to improve road safety. We postulate that there is a range of scenarios regarding data sharing, with two extremes: In...
journal article 2019
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Schwab, A.L. (author), Dialynas, G. (author), Happee, R. (author)
The bicycle, being unstable at low speed and marginally stable at high speed, is sensitive to lateral perturbations. One of the major lateral perturbations is crosswind, which can lead to accidents and fatalities. Here we investigate the effect of crosswind on the lateral dynamics and control of the bicycle in a wide range of forward speeds and...
conference paper 2018
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Nordhoff, S. (author), de Winter, J.C.F. (author), Kyriakidis, M. (author), van Arem, B. (author), Happee, R. (author)
Shuttles that operate without an onboard driver are currently being developed and tested in various projects worldwide. However, there is a paucity of knowledge on the determinants of acceptance of driverless shuttles in large cross-national samples. In the present study, we surveyed 10,000 respondents on the acceptance of driverless vehicles...
journal article 2018
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Nordhoff, S. (author), de Winter, J.C.F. (author), Madigan, Ruth (author), Merat, Natasha (author), van Arem, B. (author), Happee, R. (author)
Automated shuttles are now in a prototyping phase in several research projects. However, there is still a paucity of knowledge on the acceptance of these shuttles. This paper presents the results of a questionnaire study among individuals (n = 384) who physically experienced an automated shuttle on an office campus in Berlin-Schöneberg. The...
journal article 2018
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Shyrokau, B. (author), de Winter, J.C.F. (author), Stroosma, O. (author), Dijksterhuis, C. (author), Loof, Jan (author), van Paassen, M.M. (author), Happee, R. (author)
Steering systems of trucks consist of many linkages, which introduce nonlinearities that may negatively affect steering performance. Nowadays, it is possible to equip steering systems with actuators that provide artificial steering characteristics. However, before new steering systems are deployed in real vehicles, evaluation in a safe and...
journal article 2018
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Happee, R. (author), de Bruijn, E. (author), Forbes, P.A. (author), van der Helm, F.C.T. (author)
The human head-neck system requires continuous stabilization in the presence of gravity and trunk motion. We investigated contributions of the vestibulocollic reflex (VCR), the cervicocollic reflex (CCR), and neck muscle co-contraction to head-in-space and head-on-trunk stabilization, and investigated modulation of the stabilization strategy...
journal article 2017
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Forbes, P.A. (author), de Bruijn, E. (author), Nijmeijer, SWR (author), Koelman, JHTM (author), van der Helm, F.C.T. (author), Schouten, A.C. (author), Tijssen, MAJ (author), Happee, R. (author)
Background Effective sensorimotor integration is essential to modulate (adapt) neck stabilization strategies in response to varying tasks and disturbances. This study evaluates the hypothesis that relative to healthy controls cervical dystonia patients have an impaired ability to modulate afferent feedback for neck stabilization with changes...
journal article 2017
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de Bruijn, E. (author), Nijmeijer, SWR (author), Forbes, P.A. (author), Koelman, JHTM (author), van der Helm, F.C.T. (author), Tijssen, MAJ (author), Happee, R. (author)
Objective
To identify effects of a deviant motor drive in the autospectral power of dystonic muscles during voluntary contraction in cervical dystonia patients.
Methods
Submaximal (20%) isometric head-neck tasks were performed with the head fixed, measuring surface EMG of the sternocleidomastoid, splenius capitis and semispinalis...
journal article 2017
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Gil, Gustavo (author), Savino, Giovanni (author), Piantini, Simone (author), Baldanzini, Niccolò (author), Happee, R. (author), Pierini, Marco (author)
Objective: Motorcycle riders are involved in significantly more crashes per kilometer driven than passenger car drivers. Nonetheless, the development and implementation of motorcycle safety systems lags far behind that of passenger cars. This research addresses the identification of the most effective motorcycle safety solutions in the...
journal article 2017
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Happee, R. (author), Gold, Christian (author), Radlmayr, Jonas (author), Hergeth, Sebastian (author), Bengler, Klaus (author)
We investigated after effects of automation in take-over scenarios in a high-end moving-base driving simulator. Drivers performed evasive manoeuvres encountering a blocked lane in highway driving. We compared the performance of drivers 1) during manual driving, 2) after automated driving with eyes on the road while performing the cognitively...
journal article 2017
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van Dieën, Jaap H. (author), van Drunen, P. (author), Happee, R. (author)
Trunk stabilization is required to control posture and movement during daily activities. Various sensory modalities, such as muscle spindles, Golgi tendon organs and the vestibular system, might contribute to trunk stabilization and our aim was to assess the contribution of these modalities to trunk stabilization. In 35 healthy subjects, upper...
journal article 2017
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Nijmeijer, SWR (author), de Bruijn, E. (author), Verhagen, R (author), Forbes, P.A. (author), Kamphuis, DJ (author), Happee, R. (author), Tijssen, MAJ (author), Koelman, JHTM (author)
Botulinum toxin (BoNT) injections in the dystonic muscles is the preferred treatment for Cervical Dystonia (CD), but the proper identification of the dystonic muscles remains a challenge. Previous studies showed decreased 8–14 Hz autospectral power in the electromyography (EMG) of splenius muscles in CD patients. Cumulative distribution...
journal article 2017
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Stapel, J.C.J. (author), Mullakkal Babu, F.A. (author), Happee, R. (author)
Driver mental underload is an important concern in the operational safety of automated driving. In this study, workload was evaluated subjectively (NASA RTLX) and objectively (auditory detection-response task) on Dutch public highways (~150km) in a Tesla Model S comparing manual and supervised automated driving with moderators automation...
conference paper 2017
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Mullakkal Babu, F.A. (author), Wang, M. (author), Farah, H. (author), van Arem, B. (author), Happee, R. (author)
Safety measurement and analysis have been a challenging and well-researched topic in transportation. Conventionally, surrogate safety measures have been used as safety indicators in simulation models for safety assessment, in control formulations for driver assistance systems, and in data analysis of naturalistic driving studies. However,...
conference paper 2017
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Kyriakidis, M. (author), de Winter, J.C.F. (author), Stanton, N (author), Bellet, T. (author), van Arem, B. (author), Brookhuis, K.A. (author), Martens, MH (author), Bengler, KJ (author), Andersson, J. (author), Merat, N. (author), Reed, N. (author), Flament, M. (author), Hagenzieker, M.P. (author), Happee, R. (author)
Automated driving can fundamentally change road transportation and improve quality of life. However, at present, the role of humans in automated vehicles (AVs) is not clearly established. Interviews were conducted in April and May 2015 with 12 expert researchers in the field of human factors (HFs) of automated driving to identify...
journal article 2017
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van Leeuwen, P.M. (author), de Groot, S. (author), Happee, R. (author), de Winter, J.C.F. (author)
Motorsport has developed into a professional international competition. However, limited research is available on the perceptual and cognitive skills of racing drivers. By means of a racing simulator, we compared the driving performance of seven racing drivers with ten non-racing drivers. Participants were tasked to drive the fastest possible...
journal article 2017
Searched for: author:"Happee, R."
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