projects_fopa_isap1999-canning

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Published on December 11, 2008

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Effects of a Novel Interface on Strategic Planning by En Route Controllers : Effects of a Novel Interface on Strategic Planning by En Route Controllers John Canning Joakim Johansson Scott Gronlund Mike Dougherty Scott Mills Univ. of Oklahoma Human-Technology Interaction Center FAA Civil Aeromedical Institute Univ. of Maryland Strategic planning : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Strategic planning En route controllers make plans, but most are tactical in nature Tactical: 2-3 aircraft, 1-5 minutes Strategic plans: multiple aircraft (4+) longer time period (10 - 20 minutes) Previous experiment : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Previous experiment Studied planning behavior using existing interface (PVD, Flight Progress Strips) Strategic planner and Tactical planner Similar to division of labor used in Europe and advocated by some at MITRE & NASA Outcome: strategic planning aid would be beneficial for sequencing problems Planning tasks : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Planning tasks Two primary tasks: Classifying and Sequencing Classifying: creating groups of aircraft that all are subject to the same constraints Sequencing: ordering the aircraft within in each class New interface design : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center New interface design Design goal: improve strategic planning performance Construct interface aids for classifying and sequencing Improve information finding ability Implementation makes use of two color raster displays Representing aircraft : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Representing aircraft To perform classification, each aircraft must be represented by some token. Flight progress strips served this role in previous experiment. Aircraft tokens Marking of tokens Queueing blocks : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Queueing blocks To classify aircraft, we chose to mimic the flight strip bays, but make more of them. Color coding : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Color coding Each queueing block has its own, user-assigned color (up to 6 different colors). Using a fix : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Using a fix Aircraft sequence is frequently based on the estimated time or distance to a fixed point. Flight organizer : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Flight organizer Arrangement of displays : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Arrangement of displays Radardisplay : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Radardisplay Radardisplay Radar display : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Radar display Color coding Opaque background for highlighted aircraft Thin border for marked aircraft Finding aircraft &Checking sequences : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Finding aircraft &Checking sequences Moving the trackball pointer over an aircraft, highlights symbols in both displays Route information : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Route information Route information is linked to highlighting Evaluating the interface : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Evaluating the interface Designed second experiment, similar to previous experiment strategic controller tactical controller Trained controllers on how to use new interface (45 minutes of instruction, 1 hour of practice) Method : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Method Experiment run under two conditions: with strips and with the flight organizer In both conditions, strategist uses new radar display Busy scenarios, ~44 aircraft in 20 minutes Experimental strips condition : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Experimental strips condition Participants : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Participants 12 Full Performance Level (FPL) en route air traffic controllers who serve as instructors at the FAA Academy Tactician is also an FPL controller and instructor Familiar with PVD and DSR interfaces Questionnaire highlight : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Questionnaire highlight NASA Task Load Index (TLX) Mental demand Physical demand Temporal demand Frustration Effort Performance Measured on 0-100 scale Strategists’ Mean TLX Scores : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Strategists’ Mean TLX Scores Tactician’s Mean TLX Scores : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Tactician’s Mean TLX Scores Result : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Result Both controller positions report reduced mean workload using flight organizer Both controller positions report improved performance using flight organizer And after less than 2 hours of training! Summary (1) : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Summary (1) Based on a task analysis of strategic planning, a novel interface was designed and implemented Classification and sequencing tasks supported through the use of color coded queuing blocks and information finding techniques Summary (2) : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Summary (2) Preliminary results show reduced workload and increased performance for both controllers when using flight organizer instead of flight progress strips. Comments from participants suggest the flight organizer interface would be welcomed Demonstration : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Demonstration There will be a demonstration of the Flight Organizer Planning Aid interface in Room 4 2:15-3:00 pm Thursday Questions? : 10th Int’l Symposium on Aviation Psychology OU Human-Technology Interaction Center Questions?

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