scholarly journals Automated Driving: A Literature Review of the Take over Request in Conditional Automation

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2087
Author(s):  
Walter Morales-Alvarez ◽  
Oscar Sipele ◽  
Régis Léberon ◽  
Hadj Hamma Tadjine ◽  
Cristina Olaverri-Monreal
Keyword(s):  
Transition Process ◽  
Future Research ◽  
Automated Driving ◽  
Driving Dynamic ◽  
Dynamic Task ◽  
Emergency Situations ◽  
Operational Design ◽  
Level 3 ◽  
Guidelines And Standards ◽  
Attention Level

In conditional automation (level 3), human drivers can hand over the Driving Dynamic Task (DDT) to the Automated Driving System (ADS) and only be ready to resume control in emergency situations, allowing them to be engaged in non-driving related tasks (NDRT) whilst the vehicle operates within its Operational Design Domain (ODD). Outside the ODD, a safe transition process from the ADS engaged mode to manual driving should be initiated by the system through the issue of an appropriate Take Over Request (TOR). In this case, the driver’s state plays a fundamental role, as a low attention level might increase driver reaction time to take over control of the vehicle. This paper summarizes and analyzes previously published works in the field of conditional automation and the TOR process. It introduces the topic in the appropriate context describing as well a variety of concerns that are associated with the TOR. It also provides theoretical foundations on implemented designs, and report on concrete examples that are targeted towards designers and the general public. Moreover, it compiles guidelines and standards related to automation in driving and highlights the research gaps that need to be addressed in future research, discussing also approaches and limitations and providing conclusions.

scholarly journals Mode Awareness and Automated Driving—What Is It and How Can It Be Measured?

Information ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 277 ◽  
Author(s):  
Christina Kurpiers ◽  
Bianca Biebl ◽  
Julia Mejia Hernandez ◽  
Florian Raisch
Keyword(s):  
Gold Standard ◽  
Automated Driving ◽  
Active System ◽  
Operational Design ◽  
Automation Systems ◽  
Study Results ◽  
Level 3 ◽  
No Gold Standard ◽  
Level 2 ◽  
Initial Instruction

In SAE (Society of Automotive Engineers) Level 2, the driver has to monitor the traffic situation and system performance at all times, whereas the system assumes responsibility within a certain operational design domain in SAE Level 3. The different responsibility allocation in these automation modes requires the driver to always be aware of the currently active system and its limits to ensure a safe drive. For that reason, current research focuses on identifying factors that might promote mode awareness. There is, however, no gold standard for measuring mode awareness and different approaches are used to assess this highly complex construct. This circumstance complicates the comparability and validity of study results. We thus propose a measurement method that combines the knowledge and the behavior pillar of mode awareness. The latter is represented by the relational attention ratio in manual, Level 2 and Level 3 driving as well as the controllability of a system limit in Level 2. The knowledge aspect of mode awareness is operationalized by a questionnaire on the mental model for the automation systems after an initial instruction as well as an extensive enquiry following the driving sequence. Further assessments of system trust, engagement in non-driving related tasks and subjective mode awareness are proposed.

scholarly journals Transitions Between Highly Automated and Longitudinally Assisted Driving: The Role of the Initiator in the Fight for Authority

2020 ◽  
pp. 001872082094618 ◽  
Author(s):  
Davide Maggi ◽  
Richard Romano ◽  
Oliver Carsten
Keyword(s):  
Road Safety ◽  
Driving Simulator ◽  
Cruise Control ◽  
Automated Driving ◽  
Safety Issues ◽  
The Road ◽  
Operational Design ◽  
Level 3 ◽  
Driving Task

Objective A driving simulator study explored how drivers behaved depending on their initial role during transitions between highly automated driving (HAD) and longitudinally assisted driving (via adaptive cruise control). Background During HAD, drivers might issue a take-over request (TOR), initiating a transition of control that was not planned. Understanding how drivers behave in this situation and, ultimately, the implications on road safety is of paramount importance. Method Sixteen participants were recruited for this study and performed transitions of control between HAD and longitudinally assisted driving in a driving simulator. While comparing how drivers behaved depending on whether or not they were the initiators, different handover strategies were presented to analyze how drivers adapted to variations in the authority level they were granted at various stages of the transitions. Results Whenever they initiated the transition, drivers were more engaged with the driving task and less prone to follow the guidance of the proposed strategies. Moreover, initiating a transition and having the highest authority share during the handover made the drivers more engaged with the driving task and attentive toward the road. Conclusion Handover strategies that retained a larger authority share were more effective whenever the automation initiated the transition. Under driver-initiated transitions, reducing drivers’ authority was detrimental for both performance and comfort. Application As the operational design domain of automated vehicles (Society of Automotive Engineers [SAE] Level 3/4) expands, the drivers might very well fight boredom by taking over spontaneously, introducing safety issues so far not considered but nevertheless very important.

First encounter effects in testing of highly automated vehicles during two experimental occasions – The need for recurrent testing

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jonas Andersson ◽  
Azra Habibovic ◽  
Daban Rizgary
Keyword(s):  
Driver Behavior ◽  
Added Value ◽  
Future Research ◽  
Gaze Behavior ◽  
Repeated Testing ◽  
Automated Vehicles ◽  
Automated Driving ◽  
Perceived Safety ◽  
Repeated Interaction ◽  
Over Time

Abstract To explore driver behavior in highly automated vehicles (HAVs), independent researchers are mainly conducting short experiments. This limits the ability to explore drivers’ behavioral changes over time, which is crucial when research has the intention to reveal human behavior beyond the first-time use. The current paper shows the methodological importance of repeated testing in experience and behavior related studies of HAVs. The study combined quantitative and qualitative data to capture effects of repeated interaction between drivers and HAVs. Each driver ( n = 8 n=8 ) participated in the experiment on two different occasions (∼90 minutes) with one-week interval. On both occasions, the drivers traveled approximately 40 km on a rural road at AstaZero proving grounds in Sweden and encountered various traffic situations. The participants could use automated driving (SAE level 4) or choose to drive manually. Examples of data collected include gaze behavior, perceived safety, as well as interviews and questionnaires capturing general impressions, trust and acceptance. The analysis shows that habituation effects were attenuated over time. The drivers went from being exhilarated on the first occasion, to a more neutral behavior on the second occasion. Furthermore, there were smaller variations in drivers’ self-assessed perceived safety on the second occasion, and drivers were faster to engage in non-driving related activities and become relaxed (e. g., they spent more time glancing off road and could focus more on non-driving related activities such as reading). These findings suggest that exposing drivers to HAVs on two (or more) successive occasions may provide more informative and realistic insights into driver behavior and experience as compared to only one occasion. Repeating an experiment on several occasions is of course a balance between the cost and added value, and future research should investigate in more detail which studies need to be repeated on several occasions and to what extent.

Revisiting the empirical model ‘Phases in the junior-to-senior transition of Swedish ice hockey players’: External validation through focus groups and interviews

2017 ◽  
Vol 12 (6) ◽  
pp. 747-761 ◽  
Author(s):  
Sebastian Pehrson ◽  
Natalia B Stambulova ◽  
Kasper Olsson
Keyword(s):  
Focus Groups ◽  
Empirical Model ◽  
External Validation ◽  
Transition Process ◽  
Transition Phase ◽  
Ice Hockey ◽  
Future Research ◽  
Theoretical Frameworks ◽  
Four Seasons ◽  
Hockey Players

In this study, we continue to explore the junior-to-senior transition process in Swedish ice hockey by validating the empirical model ‘Phases in the junior-to-senior transition of Swedish ice hockey players’ created in our previous study.1 More specifically, we collected opinions and critical reflections of 15 senior professional players and expert coaches about the empirical model as a whole and about the content of each junior-to-senior transition phase and then converted the original empirical model into its validated version. Professional ice hockey players and first league coaches formed three focus groups, while three senior coaches were interviewed individually. All were encouraged to critically reflect on the empirical model. The data from all sources were analysed following guidelines of the thematic (deductive) analysis complemented by quantitative measurements of the participants’ agreement with the content of the empirical model. Results supported the sequence and designations of the junior-to-senior transition phases (i.e. preparation, orientation, adaptation and stabilization), as well as duration of the junior-to-senior transition (i.e. up to four seasons) outlined by the empirical model. We were also able to validate the psychological content (perceived demands, resources, barriers, coping strategies and outcomes) of each transitional phase. Accordingly, five themes were reformulated, 17 new themes were added and some themes were re-ordered during the conversion of the original empirical model into the validated model. To improve the readability of the validated model (from the bottom to the top), we also re-ordered sub-categories describing the psychological content of each junior-to-senior transition phase. We conclude by discussing the validated model in relation to theoretical frameworks and previous research and providing some methodology, future research and practice-oriented reflections addressed to researchers, coaches and sport psychology practitioners.

scholarly journals Sustainable governance in forestry and nature protection

2014 ◽  
pp. 113-140
Author(s):  
Dragan Nonic ◽  
Mersudin Avdibegovic ◽  
Jelena Nedeljkovic ◽  
Aleksandar Radosavljevic ◽  
Nenad Rankovic
Keyword(s):  
Natural Resources ◽  
Transition Process ◽  
Future Research ◽  
Negative Effects ◽  
Nature Protection ◽  
Role Of Government ◽  
Economic Changes ◽  
Countries In Transition ◽  
Over Exploitation ◽  
And Control

At the global level, due to the negative effects of over-exploitation of natural resources, numerous processes and initiatives for their conservation and sustainable governance have started. The beginning of the transition process, as well as political and economic changes that followed in the countries in transition, were in line with the new orientation of the international forest and nature protection policy. The transition process has caused, among other things, a redefinition of the role of government in managing natural resources. This meant a shift from ?government? to ?governance? concept. This concept refers to the change from the classical approach of ?command and control? to active participation of all involved parties and establishing rules for the division of responsibilities and benefits. The aim of the paper is to identify, analyze and systematise the current concepts of sustainable governance in forestry and nature protection, their characteristics and the principles on which they are based, with a main purpose of preparation of a research platform for more detailed research in this area. The paper gives recommendations for the application of the principles of governance in forestry and nature protection, as well as recommendations for future research in this area.

scholarly journals The Identification of Non-Driving Activities with Associated Implication on the Take-Over Process

Sensors ◽  
2021 ◽  
Vol 22 (1) ◽  
pp. 42
Author(s):  
Lichao Yang ◽  
Mahdi Babayi Semiromi ◽  
Yang Xing ◽  
Chen Lv ◽  
James Brighton ◽  
...  
Keyword(s):  
Situation Awareness ◽  
Haptic Feedback ◽  
Hand Movement ◽  
Transition Process ◽  
Recognition System ◽  
Steering Wheel ◽  
Automated Driving ◽  
Driver Behaviour ◽  
Active Mode ◽  
The Impact

In conditionally automated driving, the engagement of non-driving activities (NDAs) can be regarded as the main factor that affects the driver’s take-over performance, the investigation of which is of great importance to the design of an intelligent human–machine interface for a safe and smooth control transition. This paper introduces a 3D convolutional neural network-based system to recognize six types of driver behaviour (four types of NDAs and two types of driving activities) through two video feeds based on head and hand movement. Based on the interaction of driver and object, the selected NDAs are divided into active mode and passive mode. The proposed recognition system achieves 85.87% accuracy for the classification of six activities. The impact of NDAs on the perspective of the driver’s situation awareness and take-over quality in terms of both activity type and interaction mode is further investigated. The results show that at a similar level of achieved maximum lateral error, the engagement of NDAs demands more time for drivers to accomplish the control transition, especially for the active mode NDAs engagement, which is more mentally demanding and reduces drivers’ sensitiveness to the driving situation change. Moreover, the haptic feedback torque from the steering wheel could help to reduce the time of the transition process, which can be regarded as a productive assistance system for the take-over process.

Teaching High School Students With Disabilities to Advocate for Academic Accommodations

2019 ◽  
Vol 54 (3) ◽  
pp. 146-156
Author(s):  
Nancy J. Lopez ◽  
Nicole M. Uphold ◽  
Karen H. Douglas ◽  
Shaqwana Freeman-Green
Keyword(s):  
High School ◽  
High School Students ◽  
General Education ◽  
Students With Disabilities ◽  
Functional Relation ◽  
Transition Process ◽  
Future Research ◽  
Academic Accommodations ◽  
School Students ◽  
Self Advocacy

One factor that may contribute to the success of students with disabilities in postsecondary educational settings may be their ability to advocate for academic accommodations. By incorporating self-determination practices into the curriculum and transition process during high school, students with disabilities may acquire the self-advocacy skills for postsecondary settings. The purpose of this study was to examine the effects of a modified Self-Advocacy and Conflict Resolution (mSACR) training program on the ability of five high school students with high-incidence disabilities to request academic accommodations in a high school general education course. A multiple-probe-across-participants design was employed to evaluate the effects of the intervention on 14 targeted behaviors. Results indicated a functional relation between the mSACR and the ability of students to request accommodations. Findings from this study are discussed along with limitations, suggestions for future research, and implications for educational practice.

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