To design a GUI (Graphical User Interface) that supports multi-modal transportation options:

1. Integrate multiple transportation modes: Include options for driving, public transit, walking, cycling, and ride-hailing.

2. Unified search: Allow users to search for routes across multiple modes.

3. Mode-specific information: Display relevant information for each mode (e.g., traffic for driving, schedules for public transit).

4. Comparative views: Show side-by-side comparisons of different modes (e.g., time, cost, distance).

5. Personalization: Allow users to save preferred modes and customize their experience.

6. Real-time updates: Provide real-time information for each mode (e.g., traffic, delays, availability).

7. Clear typography and icons: Use clear and consistent typography and icons for each mode.

8. Interactive maps: Display interactive maps that show routes and stops for each mode.

9. Accessibility features: Incorporate accessibility features for users with disabilities.

10. User feedback: Collect user feedback to improve the GUI and multi-modal experience.

11. Consistency: Ensure consistency in design language across all modes.

12. Mobile optimization: Ensure a seamless experience across devices.

13. Integration with payment systems: Allow for easy payment and ticketing across modes.

14. Real-time alerts: Send real-time alerts for service disruptions or schedule changes.

15. User education: Educate users on how to use the GUI and multi-modal options effectively.

By incorporating these features, you can create a GUI that supports multi-modal transportation options, making it easier for users to plan and navigate their trips.