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Towards more helpful bus tracker apps for blind transit riders

机译：面向盲人乘客的更有用的公交车追踪器应用

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Bus trackers aid in travel planning with real-time bus arrival and location information. However, their sight-centered design means they’re inherently challenging for the blind. A clear understanding of their help-seeking situations in interacting with bus trackers is necessary to design appropriate help features as a solution. We present a qualitative method to study help-seeking situations of blind users in interacting with bus-trackers, and illustrate its application on the use of CTA bus tracker. Think-aloud observation of seven participants generated verbal reports of performing bus-tracking activities. Qualitative analysis explained what, where, and how help-seeking situations arose in learning the interface, in site interaction, determining estimated time of arrival, requesting ETA alerts, and finding bus location. We elaborate results pertinent to key help-seeking situations, the underlying help needs, and design implications for appropriate help features. The paper contributes a feasible qualitative method to study help-seeking situations, as well as valuable insights into the thoughts, actions and perceptions of blind users in real time bus tracking. This represents the first step towards developing the tool to transform the 45 million blind citizens into empowered transit riders. Implications for transit agencies, real time systems designers, and research in travel management, human-computer interaction and cognitive science are discussed.
机译：公交车追踪器可通过实时公交车到达和位置信息来协助旅行计划。但是，他们以视线为中心的设计意味着他们固有地对盲人具有挑战性。要设计适当的帮助功能作为解决方案，必须清楚地了解他们与公交车追踪器交互时的求助情况。我们提出一种定性方法来研究盲人用户在与公交车追踪器交互中的求助情况，并说明其在CTA公交车追踪器上的应用。七名参与者的思想观察观察产生了进行公共汽车跟踪活动的口头报告。定性分析说明了在学习界面，站点交互，确定预计到达时间，请求ETA警报以及查找公交车位置时，出现了什么情况，地点以及寻求帮助的情况。我们详细阐述了与关键帮助情况，潜在帮助需求以及适当帮助功能的设计含义相关的结果。本文为研究求助情况提供了一种可行的定性方法，并为实时公交车跟踪中盲人的思想，行为和感知提供了宝贵的见解。这是开发工具的第一步，该工具可将4500万盲人转变为有能力的过境乘员。讨论了对运输机构，实时系统设计人员以及旅行管理，人机交互和认知科学方面的研究的意义。

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