Implementation of User-Centered Design (UCD) Method in Product Development of Traveling Wheelchair

Abstract

Persons with disabilities often difficulties when traveling and mobility in daily activities, especially with movement disorders. Many tools have been developed for people with disabilities to support mobility. One of them is a traveling wheelchair. Based on preliminary studies, it is known that the dimensions of traveling wheelchairs tend to be smaller than wheelchairs in general and have limited features that affect the comfort of its users. This study tries to evaluate a traveling wheelchair using the user-centered design (UCD) method and usability testing and developing this product. The standard UCD method used is based on ISO 9241-210, which focuses on users’ needs and interests by applying ergonomic criteria and knowledge of usability techniques. The evaluation results show that the overall usability level of the wheelchair product tested has excellent standards with usability values ranging from 89.12%-94.56%. However, there are still several problems, especially in the usability satisfaction criteria. Based on the evaluation results and the user’s thinking aloud, the development of this traveling wheelchair product was carried out. Development is based on several parameters such as stability, wheelchair dimensions, seat, postural support, and adjustable and ergonomic factors.