Usability of a navigation application for travel in Quebec City with wheeled mobility device and, further validation of the Evaluation of satisfaction with geospatial assistive technology

PURPOSE

Knowledge of route accessibility is indispensable for "wheeled mobility device" users to travel safely and efficiently; however, current navigation technologies hardly provide adapted information for this population. Aims of the study were to collect data on the usability of a navigation application and to propose a version 1.0 of the Evaluation of satisfaction with geospatial assistive technology (ESGAT), by addressing the criterion, construct and cross-cultural validities.

METHOD

A filmed field trial and a methodological study were conducted in parallel. Thirty wheeled mobility device users were filmed planning and making a 10-minute known journey using the HERE WeGo app. The ESGAT, ÉSTGA (French version) and the Computer System Usability Questionnaire were administered. A video observation grid addressed the effectiveness and efficiency during the journey. Descriptive, correlation and multiple match analyses were performed.

RESULTS

Fourteen men and 16 women averaging 45.9 years old tried out HERE WeGo; 14 were powered wheelchair users. Usability of the app was moderate (good effectiveness, moderate efficiency and quite satisfied). The criterion validity of the ÉSTGA was good (r = 0.598; p < 0.001). The construct validity was average considering the results for factor 1 (α = 0.789, acceptable), factor 2 (α = 0,586, low) and factor 3 (α = 0.409, unacceptable). The cross-cultural validity (French vs English) was moderate (r = 0.861; p < 0.001).

CONCLUSION

ESGAT and ÉSTGA 1.0 questionnaires are now available in English and French with a total mean score (11 items), an informatics subscore (mean of 5 items) and a geomatic subscore (mean of 6 items). Their validation should be pursued with new navigation applications. IMPLICATIONS FOR REHABILITATIONClinicians should ask their clients using a wheeled mobility device to test navigation applications to ensure their safety and complete the Evaluation of satisfaction with geospatial assistive technology (ESGAT 1.0), also available in French.Clinicians should inquire about satisfaction for items addressing informatics (Ease of access, Learnability, Hands-free function, Ease of use, Transportability and Appearance) and items addressing geomatic (Content, Geographic information, Effectiveness, Efficiency, Real-time navigation assistance, Aspect of security).Rehabilitation clinicians should inquire about the efficiency of the navigation app, considering avoiding or announcing potential obstacles such as: travelling on the street for a long portion of the trip and not on the sidewalk; verbal indication too soon or too late; incorrect indication; damaged, and congested sidewalk.

Evaluation of satisfaction with geospatial assistive technology (ESGAT): a methodological and usability study

Purpose: Manual wheelchair users are more vulnerable, in situations such as road crossings, hazardous sidewalks or curbs and crossing of buildings and facilities threshold. Geospatial assistive technology (GAT) can help with route planning. However, it is important to ensure the usability of such products, as well as the satisfaction of persons with reduced mobility. The study's aim was (1) to develop and validate a questionnaire on the satisfaction of GAT, in English and French, and to (2) assess satisfaction, efficacy and efficiency of a GAT with manual wheelchair users following a filmed trial in a dense urban area.Method: A methodological study was conducted (development of the questionnaire, assessment of its content validity, feasibility and practicability) followed by a trial and post-observations with the videos. Two questionnaires (English, French) were concurrently validated by two groups of experts (n = 8), and then field-tested by wheelchair users (n = 8), using Google Maps Pedestrian routeing tool.Results: The Evaluation of satisfaction with geospatial assistive technology (ESGAT) consists in a user profile and their experience with the technology, followed by 12 satisfaction criteria rated from 1-not satisfied to 5-very satisfied. Both questionnaires were rated as feasible and practicable to complete. The usability of Google Maps Pedestrian routeing tool was measured as "moderate" by manual wheelchairs since the total satisfaction score at the ESGAT was 3.9/5 (quite satisfied). The items with the lowest score were navigation assistance, hands-free function and security. The GAT was effective (87.5% have completed their destination) but not efficient (37.5% needed help).IMPLICATIONS FOR REHABILITATIONFor manual wheelchair users paired with geospatial assistive technology:• A 10 minutes questionnaire was developed and validated to assess their satisfaction after testing aid in an urban area.• Satisfaction criteria to address are ease of access (service), learnability, hands-free function, ease of use for planning as well for navigating, transportability/ appearance, content, geographic information, effectiveness, efficiency, navigation assistance and security• A field test is necessary to ensure the effectiveness of the technology in avoiding or announcing potential obstacles such as sidewalk crossing ramp, damaged and congested sidewalk; sidewalk tilt (side slopes); thresholds at destination; verbal indication too soon or too late; incorrect indication; the arrow does not indicate the right direction; readjustment of the route needed; a lack of indication; and human intervention needed.

A Comprehensive System for Monitoring Urban Accessibility in Smart Cities

The present work discusses the possibilities offered by the evolution of Information and Communication Technologies with the aim of designing a system to dynamically obtain knowledge of accessibility issues in urban environments. This system is facilitated by technology to analyse the urban user experience and movement accessibility, which enabling accurate identification of urban barriers and monitoring its effectiveness over time. Therefore, the main purpose of the system is to meet the real needs and requirements of people with movement disabilities. The information obtained can be provided as a support service for decision-making to be used by city government, institutions, researchers, professionals and other individuals of society in general to improve the liveability and quality of the lives of citizens. The proposed system is a means of social awareness that makes the most vulnerable groups of citizens visible by involving them as active participants. To perform and implement the system, the latest communication and positioning technologies for smart sensing have been used, as well as the cloud computing paradigm. Finally, to validate the proposal, a case study has been presented using the university environment as a pre-deployment step in urban environments.