A Tangible Multi-Display Toolkit to Support the Collaborative Design Exploration of AV-Pedestrian Interfaces

Hoggenmueller, Marius; Tomitsch, Martin; Parker, Callum; Nguyen, Trung Thanh; Zhou, Dawei; Nebot, E.

doi:10.1145/3441000.3441031

Cited by 3 publications

(5 citation statements)

References 44 publications

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“…We developed a set of light patterns to demonstrate the usage of an eHMI interface for shared AV services following a user-centred design process supported through a purpose-built prototyping toolkit (involving workshops with 14 experts) [23]. We do not dive deeper into the design of the eHMI itself here, as this is not the focus of the contributions reported in this paper.…”

Section: Rw-vrmentioning

confidence: 99%

Context-Based Interface Prototyping: Understanding the Effect of Prototype Representation on User Feedback

Hoggenmueller

Tomitsch

Hespanhol

et al. 2021

Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems

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The rise of autonomous systems in cities, such as automated vehicles (AVs), requires new approaches for prototyping and evaluating how people interact with those systems through context-based user interfaces, such as external human-machine interfaces (eHMIs). In this paper, we present a comparative study of three prototype representations (real-world VR, computer-generated VR, real-world video) of an eHMI in a mixed-methods study with 42 participants. Quantitative results show that while the real-world VR representation results in higher sense of presence, no significant differences in user experience and trust towards the AV itself were found. However, interview data shows that participants focused on different experiential and perceptual aspects in each of the prototype representations. These differences are linked to spatial awareness and perceived realism of the AV behaviour and its context, affecting in turn how participants assess trust and the eHMI. The paper offers guidelines for prototyping and evaluating context-based interfaces through simulations. CCS CONCEPTS• Human-centered computing → HCI design and evaluation methods.

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Section: Rw-vrmentioning

confidence: 99%

Context-Based Interface Prototyping: Understanding the Effect of Prototype Representation on User Feedback

Hoggenmueller

Tomitsch

Hespanhol

et al. 2021

Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems

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“…Designing the eHMI light patterns for the low-res lighting display, the design team followed an iterative design process, which involved the use of a tangible toolkit for prototyping AV-pedestrian interactions (Hoggenmüller et al, 2020).…”

Section: Designing Ehmi Light Patternsmentioning

confidence: 99%

Designing Interactions With Shared AVs in Complex Urban Mobility Scenarios

Hoggenmueller¹,

Tomitsch²

2022

Front. Comput. Sci.

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In this article, we report on the design and evaluation of an external human-machine interface (eHMI) for a real autonomous vehicle (AV), developed to operate as a shared transport pod in a pedestrianized urban space. We present insights about our human-centered design process, which included testing initial concepts through a tangible toolkit and evaluating 360-degree recordings of a staged pick-up scenario in virtual reality. Our results indicate that in complex mobility scenarios, participants filter for critical eHMI messages; further, we found that implicit cues (i.e., pick-up manoeuvre and proximity to the rider) influence participants' experience and trust, while at the same time more explicit interaction modes are desired. This highlights the importance of considering interactions with shared AVs as a service more holistically, in order to develop knowledge about AV-pedestrian interactions in complex mobility scenarios that complements more targeted eHMI evaluations.

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“…The framework was then iteratively refined through discussions with all authors, bringing in two additional external perspectives. Importantly, the two additional authors had previous experience with non-human personas [65,66] and more-than-human perspectives in the participatory design of smart cities [67,68]. We further drew on our experience with middle-out design as an approach for bring together representatives from topdown and bottom-up organisations in community engagement [69], integrating this approach into the framework as a way to form a coalition that is able to speak on behalf of non-human living beings.…”

Section: Phase 2-developing the Non-human Personas Frameworkmentioning

confidence: 99%

“…A key outcome from these participatory sessions is the collective development of a descriptive narrative of the behaviour of the identified non-human persona. These narrative descriptions provide rich data that bring the persona to life [51,52], ideally through a vivid story concerning the needs of the persona in the context of the design intervention [67,68]. It is possible that during this step a persona is split into multiple representations if unique characteristics and behaviours are identified, Interaction Design and Architecture(s) Journal -IxD&A, N. 50, 2021, pp.…”

Section: Step 3-forming Coalitions Through Middle-out Engagementmentioning

confidence: 99%

See 1 more Smart Citation

Non-human Personas. Including Nature in the Participatory Design of Smart Cities

Tomitsch¹,

Fredericks²,

Vo³

et al. 2021

IxD&A

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For the past decades humans have been placed at the centre of designing information and communication technologies (ICT), leading to the rise in prominence of human-centred design. The field of smart cities has equally adopted notions of citizen participation as a way to ensure that technological solutions improve people’s livelihoods. However, these kinds of processes treat the urban environment as separate from nature, promoting human comfort and convenience over planetary health and wellbeing. Motivated by these growing concerns that highlight the urgency to reconsider how we define and practice participation in smart cities and in human-centred ICT solutions more broadly, this article assesses how the personas method can be adapted to include more-than-human perspectives in the design process. Based on a case study, which involved designing smart urban furniture for human and non-human use, we introduce a framework for developing and employing non-human personas. As a key element of the framework, we describe a middle-out approach for forming a coalition that can speak on behalf of the non-human species that are impacted by design decisions. We demonstrate how the framework can be used through its retrospective application on two research-led smart city projects. The article concludes with a discussion of key principles for creating and using non-human personas in design projects.

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A Tangible Multi-Display Toolkit to Support the Collaborative Design Exploration of AV-Pedestrian Interfaces

Cited by 3 publications

References 44 publications

Context-Based Interface Prototyping: Understanding the Effect of Prototype Representation on User Feedback

Context-Based Interface Prototyping: Understanding the Effect of Prototype Representation on User Feedback

Designing Interactions With Shared AVs in Complex Urban Mobility Scenarios

Non-human Personas. Including Nature in the Participatory Design of Smart Cities

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