1. GPS Parking System Team 29 (Campus) Shinyi Chen Chih-Ching Huang Pei-Hua Lu

2. Topic Description Purpose The GPS parking system aims at solving the problem of finding a parking space in a crowded parking structure/lot. It is an extension to the current GPS navigation system in the cars to support parking structure maps and parking space finding. Why it is new The current GPS navigation system in the cars does not have the functionality to see the detailed map inside a parking lot/structure or the parking availability. The GPS Parking System provides these functionalities. Assumptions: Technology that are needed to supported our system are available. These includes the wireless communication between the car and parking lot. The parking lot has its own system to determine its parking availability and to broadcast necessary information. The car is able to receive that information.

3. System Requirements The system shall Interface through touch screen and other hardware currently used by the GPS Navigation System. Display map of the parking lot. Provide three different zoom levels and allow users to zoom in and zoom out. Indicate available parking spaces, either all of them or three of the nearest. Provide the option to view maps of different levels of the parking structure. While the display is showing all available parking spaces, the system shall update available spaces every 5 seconds.

4. Navigation Map Find parking spaces Zoom in Zoom out See different parking structure levels Clear Exit Show all Show Nearest 3 Route to 1 Route to 2 Route to 3 Level 1 Level 2 ………

5. User Analysis Discussion User Profile Psychological Characteristics Cognitive styleSpatial / Intuitive AttitudeNegative MotivationHigh Knowledge and Experience Reading levelAbove 12 th grade Typing skillMedium EducationCollege degree System experienceModerate Task experienceNovice/Moderate Application experience1 similar systems Native languageEnglish Use of other systemsLittle or None Computer literacyModerate Job and Task Characteristics Frequency of useMedium Primary trainingManual Only System useDiscretionary Job categoriesAll Turnover rateModerate Task importanceLow Task structureModerate Physical Characteristics Color-blindNo HandednessRight GenderBoth

6. User Analysis Discussion Dialogue Styles Function Key has the highest hit rate. It is what the current GPS Navigation uses. Our users will need easy access keys to get what they want to see directly. Menu is another dialog we decided to use in combination with function keys. It is used when a functionality requires more than one step to get to. This will save space on the screen and allow drivers to see the maps while using the menu. Other options with high hit rates are not appropriate for our system. The user of the system is either operating the car or a passenger in the car. They must have quick and easy access to functionalities. The efficient use of space was also important in determining the appropriate dialog style for our system. Dialog Style User Profile MenuFill-in formsQ & ACommand language Function key Direct manipulation Natural language 111613 17139

7. User Analysis Discussion Task Analysis finding parking space changing parking floor level zooming clear displaying processing requesting processing Navigation Display (users) available parking space parking structure information available space new display info new display property New display info update info location floor level map refresh User request and current display info

8. User Analysis Environment This application bundles on user’s current GPS navigation system. This is a platform-independent application. It avoids tying this application to any particular OS, as far as possible.

9. User Analysis I/O Devices Touch Screen Used by the current GPS Navigation Systems in cars. Allows both output and input Saves space and still allows input equivalent to a keyboard. Hardware Input Buttons Used by the current GPS Navigation Systems in cars. Provides an alternate way to navigate and make selections.

10. Visual Design Summery Style Guide Map Screen Background shown in beige Lines and text shown in black Indication of car position shown in red arrow, always in the center of map Routes shown in blue North indicator always be placed at the left top of the screen, with an red arrow pointing north

11. Visual Design Summery Style Guide Buttons / Menu Buttons Background is gray Text always capitalized using black If scrolling buttons used, the up and down triangles should be in black Black border Focused selection has yellow border

12. Visual Design Icons / Symbols North Indicator Red arrow pointing in the direction of north on button (describe above) Up/Down buttons Black triangles pointing up/down on buttons (described above) Current position indicator Red arrow pointing in the direction the car is heading Available parking spaces Indicated using solid blue circles If nearest 3 are being displayed, the numbers next to each is shown in red

13. Visual Design Colors, fonts … etc The color scheme (describe above), fonts and most other aspects of the visual are consistent with the current GPS Navigation Systems. This consistency makes the transitions into and out of the GPS Parking System invisible to the users. The users who currently own the GPS Navigation will not have to adjust to or learn to use a new style of navigation. Use colors red and/or blue for items on the map. These colors are obvious when placed on the map background and yet not distracting.

14. Main Screen

15. Screen Prototypes Find Parking

16. Screen Prototypes Explanation Pop-up Menu Selected button (ie. Find parking) is indented and the menu is popped up. Pressing the indented button closes (cancel) the pop-up menu. Popped-up menu is automatically closed if nothing is selected from the pop-up menu in 5 seconds.

17. Screen Prototypes Show All

18. Screen Prototypes Show Nearest

19. Screen Prototypes Show Route

21. Screen Prototypes View Another Level

22. Screen Prototypes Explanation Structure level selection Change to view another level in the parking structure Up and down buttons to navigate within the menu. The orange border indicates the button that is being focused on. It is focused on the current level the car is on initially. Viewing and driving level indicator Press to return viewing level to the same level the car is on

23. Comments Tools Adobe Photoshop Adobe Illustrator Macromedia Director Lessons learned Trade off between originality and usability To resolve conflicts in design issues, certain things have to be sacrificed Plans Continue to improve the current design for better usability Add functionality details that we might have missed in the requirements Complete the prototype

24. Link This presentation can be downloaded from http://www-scf.usc.edu/~shinyich/cs588/presentation1.ppt