Meghna Krishnan Rahul Nair Kedar A. Shiroor Dispatcher’s Rescue

Introduction What is the Stingerette Why this project? Quandary of the Dispatcher

User & Environment Analysis Dispatcher Drivers Students Surrounding Environment –Computer, Radio, Telephone –Constant Disturbances

Current System

Design Requirements Speed! Speed! Speed! Reduced workload –Typing –Recall More efficient operation Robustness Actual deployment

Overview of Design Design Features –Map Interface –Dual Monitor –GPS –Voice Input Discarded Design Components –In-car display, Input via Stylus, Voice assistant, Smart board, Text entry and Hierarchical menu system for callers. –Cost and practicality hampered deployment.

Prototype – Call listing

Prototype – Map interface

Interaction on Map Display

Usability Evaluation 2 Groups (10 users) –2 Dispatchers –8 Students (good campus knowledge) Training (Demonstrate basic functionality) 10 Benchmark Tasks –Time for each task –Errors Questionnaires –Pre-Session –Post-Session Interview

Expectations vs. Results Faster Need time to learn Problems with one handed use Difficulty with Vehicle layout Yes No No (8/10)

Interface

User Suggestions & Comments Dispatchers –Mapping Bus Routes –Highlight frequent locations –No Voice!! Students –Swap vehicle no. with driver no. –Bigger vehicle icons on map –Building names instead of numbers –Increase size of map –Change map orientation

Conclusions Speed thrills!! Primary Users loved it Actual Deployment (without GPS) Future Design Iterations –Make the Interface User Modifiable –Integrate GPS with the system –Improve map

Questions?