The document summarizes the development of a voice user interface system called JoeyTalk that provides real-time information about the location of the Joey shuttle at Tufts University. The system uses GPS data to determine the shuttle's location and uses landmarks and simple language to communicate this to users over the phone or through a website. Usability testing was conducted to refine the design and ensure the system could effectively convey the shuttle's location in a quick and easy to understand manner. The goal was to develop a solution that catered to user needs and provided real-time transit information.

1. JoeyTalk GPS Speech Recognition System May 2006

2. Our Team Karen Lin Steve Myrthil Hao Tran

3. Our Joey at Tufts Free shuttle from campus to Davis Square Stops at various locations on campus Used by students, faculty, staff and visitors

4. Wait or Walk? Frequent changes in the schedule Inconsistent arrival/departure times Traffic Delays Shift Changing of Drivers Change of routes

5. Real-time information on Joey’s location Via website currently in testing phase A Solution…

6. Our Solution… A decision aid that talks

7. Making Joey Talk Design a voice user interface Prototype Usability Test Refine Design

8. The Design Process How to communicate where the Joey is Use major landmarks Keep wording simple and effective Determine each unique path

9. Mapping The Prompts Tufts University Davis Square Red Line Stop

10. Mapping The Prompts The Joey is on Packard Avenue on its way to Campus Center. Tufts University Davis Square Red Line Stop

11. Interpreting GPS Latitude and longitude coordinates Each set pinpoints an address 42.4083790, -71.1207980 160 Packard Ave, Medford, MA

12. Our Simulation Moves the Joey through virtual space Mimics the 10-second refresh rate VXML and Java Bevocal host server Sample Call of Initial Prototype:

13. Usability Testing Methodology Real users as participants (5) Three test scenarios Observations, timed tasks Questionnaires because it’s all about the user’s experience…

14. “ Takes too long a time to reach goal information (Joey’s location)” Usability Findings A snap shot

15. Catering to User needs… Redesigned to tell the Joey’s location immediately Before After

16. Joey all grown up… Final Sample Call: Redesign resulted in improved usability ratings

17. As Joey matures… Full Integration with JoeyTrack Website Accommodate Two Shuttles Route Advisory Alerts Text Messaging Options

18. Outside Applications Other Tufts’ shuttles Other mass transit systems Locate your teenage kids Anything you could hope to know

19. Questions?

20. Thank You!