Abstract
The current Instant Torrential Rain Alert system in Taiwan lacks a user-centered design. This study analyzed user needs and proposed improvements to the alert system. As a result, it was found that the information hierarchy was unclear and the readability was low. Based on these findings, a new alert interface was designed, emphasizing improved information organization and visualization. The specific contributions are as follows: (1) Information Hierarchy – The alert was divided into three components: the “Popup Notification”, the “Disaster Prevention Detailed Information”, and the “Rainfall Radar Map”, enabling step-by-step information delivery and promoting quick understanding. (2) Prioritization of Alert Information – The alert content was categorized into primary information (disaster type, affected areas, and expected duration) and secondary information (response measures, evacuation sites, and rainfall forecasts), thereby improving readability.
