ID: 248
/ Fr.T3.M1: 1
Research Strand
Topics: STS on Innovations in Mobility and Participation 2Keywords: Manual Mobility, Steering, Wheelchair Skills, One-handed, Usability
The Viability of a Steering-by-Leaning System to Control a Manual Wheelchair One-Handedly
M. Spriano, S. Schmucki, S. Villiger, W. R. Taylor, R. Togni
ETH Zürich, Switzerland
Manual wheelchairs are essential tools for individuals with physical disabilities, but conventional designs are known to be inefficient and propulsion requires good coordination and constant use of both hands. To combat this, we present our novel steering-by-leaning principle in which the backrest functions as a steering wheel allowing users to control direction through upper body flexion. The aim of this study was to evaluate the usability and performance of the steering-by-leaning wheelchair system for one-handed propulsion by comparing it to a conventional dual-handrim wheelchair. Seven participants completed a test course in both wheelchairs propelling with just one hand. The results demonstrated a significant decrease of 25% in completion times and a 30% increase in performance scores with the prototype. Additionally, users reported lower perceived difficulty and greater confidence when using the prototype. These findings suggest that the steering-by-leaning system enables one-handed propulsion, and offers a promising alternative to improve mobility and independence in one-handed wheelchair users. Further research is needed to validate these results in larger populations and out-of-lab environments.
ID: 281
/ Fr.T3.M1: 2
Research Strand
Topics: STS on Innovations in Mobility and Participation 2Keywords: Wheelchair Design, Daily Life, Prototype Testing
From Experiment to Experience: Real-World Case Studies on Steering-by-Leaning Wheelchairs
C. Grünenfelder, A. Baumgartner, S. Villiger, W. R. Taylor, R. Zemp, R. Togni
Laboratory for Movement Biomechanics, ETH Zürich, Switzerland
Manual wheelchair users experience significant physical strain due to inefficient propulsion and frequent braking for directional control. This study investigates the real-life applicability of an upper-body-actuated wheelchair steering system, "steering-by-leaning." Four experienced wheelchair users tested the prototype in daily life over multiple days, followed by a controlled trial each, comparing conventional and steering-by-leaning mode. Results indicate that the steering system reduces physical effort, increases movement efficiency, and allows for higher velocities while decreasing braking energy. The study confirms preliminary laboratory findings and highlights the need for individual wheelchair customization to maximize benefits. These insights contribute to the development of more ergonomic and efficient assistive technologies, aiming to reduce barriers in place for wheelchair users.
ID: 148
/ Fr.T3.M1: 3
Research Strand
Topics: STS on Innovations in Mobility and Participation 2Keywords: mobility devices, accessibility, infrastructure
Exploring the Use of Bicycle Paths By Mobility Device Users
W. Mortenson1, A. Battalova2, T. Scales3, G. Bever3, J. Chan3, J. Hall3, J. Perkins3, W. C Miller3
1University of British Columbia, Canada, Centre For Aging Smart, International Collaboration on Repair Discovery; 2Royal Roads University, Canada; 3University of British Columbia, Canada
In many municipalities in Canada mobility devices (e.g., manual wheelchairs, scooters, powerchairs) are only allowed on city sidewalks, but they frequently encounter obstacles there.
Purposes: 1) To explore the potential use of bicycle paths by people who use mobility devices. 2) To observe mobility device users navigating bicycle paths and their interactions with other path users.
Methods: We conducted semi-structured interviews (n=31), and video recorded bicycle path excursions and post-trip interviews (n=23), with participants with a wide range of ages, abilities and methods of mobility.
Results: We identified three main themes. “Sidelined by sidewalks” illustrated how sidewalk use can be difficult because of factors like poor maintenance, construction, and clutter. “Choosing the path of least resistance” revealed how participants strategically used a combination of city streets, bicycle paths and sidewalks to move around. “Mobility as both means and ends” illustrated the important decision-making factors participants used including safety of self and others and valuing enjoyable routes.
Conclusion: Mobility decision-making is an ongoing and reflective process that considers social and physical environmental factors, such as the existence and quality of curb cuts and barrier-free paths. Our findings support a trial project that would pilot allowing mobility device use in bicycle paths.
ID: 206
/ Fr.T3.M1: 4
Research Strand
Topics: STS on Innovations in Mobility and Participation 2Keywords: Wheelchair training, social participation, assistive technology
Investigating How The Selection And Training In Wheelchair Use Impact Users’ Occupational Balance
A. Hadjiklitou, M. Georgiadou
European University Cyprus
The use of a wheelchair is a vital tool for people with mobility problems, offering autonomy and independence. Yet the lack of specialised training significantly affects users' participation in daily activities, which can lead to functional difficulties and reduced quality of life. In addition, the physical and social environment creates significant barriers, limiting mobility and participation. In this study, we investigate the role of structured wheelchair training in supporting the balance of daily activities, autonomy and social inclusion. Semi-structured interviews were conducted with chronic wheelchair users in Cyprus, identifying key themes through thematic analysis. Findings revealed that people without formal training struggle with accessibility and participation, while people trained abroad report higher self-confidence and improved social participation. These results highlight the need for structured training programmes in Cyprus to enhance functionality and inclusion.
ID: 151
/ Fr.T3.M1: 5
Research Strand
Topics: STS on Innovations in Mobility and Participation 2Keywords: powered wheelchair, powered scooter, activity, leisure
Children and Young People's Participation and Freedom with a Wheelchair: A Deeper Understanding of Problems Due to Inaccessibility
C. Pettersson1, K. Baudin2
1Kristianstad University, Sweden; 2Karolinska Institutet, Sweden
Achieving an equal and accessible society for all is a shared global and national aspiration. Mobility, defined as the ability to move safely and independently within societal and domestic contexts, is crucial for ensuring a secure daily life and fostering participation and freedom. The primary objective of this project was to explore and identify factors that pose potential risks for accidents and injuries among children and young people who use wheelchairs. Method: Utilizing a qualitative descriptive approach, this study forms part of a longitudinal document analysis with a qualitative cross-sectional design, based on reports of discrimination due to inaccessibility received by the Ombudsman for Children (DO) during the period 2022–2023, employing thematic analysis. These cases were drawn from both metropolitan environments and small municipalities, encompassing settings such as schools, healthcare facilities, restaurants, and public transportation. The analysis identified three key themes. Result: Ensuring safety and accessibility is paramount for children and young people who use wheelchairs to achieve security in their daily lives, to facilitate their participation and freedom within society. Furthermore, it is imperative to advance our understanding of the complex relationships between the lack of accessibility, participation, and independence in public environments.
ID: 288
/ Fr.T3.M1: 6
Research Strand
Topics: STS on Innovations in Mobility and Participation 2Keywords: Autonomous vehicles, User’s needs, Accessibility
Driverless Vehicles and the Autonomy of Travelers with Disabilities
J. Lang1, F. Jouen1, G. Uzan2
1CHArt-EPHE, France; 2CHArt-THIM, Université Paris 8
The introduction of autonomous vehicles represents a major advancement in transportation; however, it also raises significant accessibility challenges for people with disabilities. This study examines the issue of dual autonomy, focusing on both the vehicle’s independence and that of the disabled passenger. Through a qualitative analysis including interviews and focus groups, we identify the main obstacles faced by blind individuals, wheelchair users, and those with cognitive or psychosocial disabilities. Our findings indicate that the absence of a driver necessitates the implementation of tailored solutions, such as automatic ramps, audio guidance systems, and accessible control interfaces. We also highlight the importance of human assistance, whether remote or on-site, as well as the need for strict regulations to ensure optimal accessibility. In conclusion, we recommend an approach that integrates universal design principles, appropriate regulatory developments, and inclusive digital solutions to ensure effective autonomy for travelers with disabilities.
ID: 268
/ Fr.T3.M1: 7
Research Strand
Topics: STS on Innovations in Mobility and Participation 2Keywords: AVAS, Electric Vehicles, Visual Impairment
Making Electric Vehicles Audible: Perception and Inclusivity in Acoustic Vehicle Alerting System Design
F. Neff1, D. Fitzpatrick2, G. Craddock2, C. Cheevers2
1Technological University of the Shannon, Ireland; 2National Disability Authority, Ireland
Electric Vehicles (EVs) operate with reduced engine noise at low speeds, raising safety concerns for pedestrians, particularly those who rely on auditory cues. To mitigate these risks, UNECE Regulation No. 138 mandates that EVs be fitted with an Acoustic Vehicle Alerting System (AVAS) – an external sound-generating device designed to improve EV detectability and provide pedestrians with auditory cues about vehicle movement.
Despite this regulatory requirement, the real-world effectiveness of current AVAS design, particularly for individuals with visual disabilities, remains insufficiently studied. This paper presents an analysis of survey data collected from two participant groups: individuals without disabilities and individuals with visual impairments. A structured survey with Likert-scale statements assessed the perceived safety and detectability of current AVAS sound signatures. The statistical analysis focuses on descriptive comparisons to highlight key trends.
Results indicate that visually impaired participants perceive AVAS sounds as significantly less effective in conveying vehicle presence and movement in real-world settings, providing lower median ratings and exhibiting more consistent response patterns compared to those without disabilities. These findings suggest that current AVAS designs may be inadequate for visually impaired pedestrians, highlighting the need for further refinement and targeted empirical research.
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