Navi4all - A pilot navigation app for the city of Kaiserlautern

Planning cities today means much more than just arranging streets and buildings; apps decisively shape how we experience urban life. Together with the city of Kaiserslautern, we are creating an app that aims to help blind and visually impaired people navigate the city more easily.

Navi4all - A pilot navigation app for the city of Kaiserlautern

General information:

Client:
City of Kaiserlautern
Period of time:
2025

Planning Cases:

  • Develop a navigation app for blind and visually impaired people.
  • Involve users directly through co-creative workshops.
  • Integration of barrier-free routing using local and dynamic data.
  • Apply people-centered and inclusive design methods.
  • Overview

    The “Navi4all” project is a pilot initiative to develop a mobile navigation app tailored for blind and visually impaired users developed along with the City of Kaiserslautern. The app focuses on inclusive design, offering personalized routing and accessibility features such as screen reader compatibility, audio guidance, and integration of local data like construction sites and sidewalk quality. Developed in close collaboration with affected users, the app is part of a larger effort to promote barrier-free mobility in urban areas.

    Objectives

    The project aims to enhance independent mobility for blind and visually impaired individuals through tailored routing options. The app combines inclusive design, local urban data, and technical integration to create an intuitive, accessible navigation tool. To meet the diverse needs of users — and as part of its integration within the KL.Navi platform — the system offers different user interfaces for different user profiles, including blind and visually impaired users as well as sighted users, each optimized for clarity, usability, and accessibility.

    Key Methods & Approach

  • Apply an agile development process with iterative testing phases, integrating feedback from users and mobility training experts into each prototype iteration.
  • Conduct user-centered design workshops with blind and visually impaired participants.
  • Use a modern, cross-platform tech stack (Flutter) and integrate routing with OpenTripPlanner.
  • Apply accessibility standards such as WCAG 2.1 to guide UI/UX decisions.
  • Ensure seamless integration with the existing KL.Navi platform and its multiple user profiles.
  • Use of open data as well as municipal data sources such as LIDAR scans and local information on construction sites.
  • Define and implement technical requirements for speech interaction (voice input and output), screen reader compatibility and haptic feedback.
  • Map
    People on bicycles
    People on bicycles

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