Sentinel App: Currently in Development
The Sentinel app is being developed to support emergency responders in the rapid triage and assessment of pedestrian collision casualties. We are taking a human-centred approach to ensure the tool reflects the real-world needs, workflows, and constraints of the people who will use it in the field.
Our process begins with preliminary interviews with key stakeholders, including the West Midlands Ambulance Service (WMAS) and The Air Ambulance Services (TAAS), to understand current practice and identify how Sentinel can add the most value. Insights from these conversations directly inform the design of a structured questionnaire, which is then administered to a wider group of emergency responders to collect detailed data on user needs and priorities. The findings will be analysed and compiled into a report that shapes the next phase of app development.
Building on this work, the app’s development follows four key stages. Interviews and questionnaires with WMAS help document user expectations, task flow, and design requirements, while in parallel we define the scope of app content, balancing the minimum information needed for usability with the maximum a responder can absorb under pressure. These inputs feed into interface development, where the app is built and prepared for deployment consideration. The final stage, interface validation, involves testing and refining the interface with end users, including planned trials at the National Transport Design Centre (NTDC).
