When designing the UI/UX for Scania's navigation app, we concentrated on meeting the specific needs of truck drivers. Our approach included several key elements:

1. **User Research and Feedback**: We conducted surveys and gathered insights from truck drivers to understand their unique requirements and challenges. Collaborating with various teams ensured that the design addressed the practical needs of truck drivers.

2. **Display and Interface Design**: The interface was designed for larger displays (10-inch and 12-inch screens) to ensure that information is easily readable and accessible. We implemented a clean and intuitive layout that minimizes distractions and enhances safety.

3. **Route Optimization and Real-Time Updates**: We integrated features like route optimization to provide truck-specific routing options, taking into account weight and height restrictions as well as road regulations. Real-time updates on traffic, weather, and points of interest (POI) such as rest areas and fuel stations were also included.

4. **Safety Features**: Alerts for potential hazards, including tunnels, danger zones, and avoidance areas, were incorporated. Voice commands were implemented to allow drivers to interact with the app without taking their hands off the wheel.

5. **Customization and Personalization**: Drivers can create profiles and set truck attributes such as length, height, weight, and axle configuration. We offered multiple map views and layers, including day/night modes, to enhance visibility and usability.

6. **Testing and Validation**: Extensive testing was conducted on actual devices (10-inch and 12-inch displays) to ensure the app performs well in real-world conditions. We performed unit testing, integration testing, and penetration testing to ensure the app is secure and reliable.

7. **Localization and Language Support**: The app supports multiple languages, including English, Swedish, German, and Russian, to cater to a diverse user base.

By focusing on these aspects, we ensured that the navigation app was tailored to the unique needs of truck drivers, providing them with a safe, efficient, and user-friendly experience.