“ Human Centered” nformation Requirements Analysis Integrated Human Centered Systems Approach Semi-Structured" Decision Theory Driver Distraction Analysis
“Human Centered” Information Requirements Analysis • Integrated Human Centered Systems Approach • “Semi-Structured” Decision Theory • Driver Distraction Analysis
Driving Task Definition Driver Secondary Everything Else Systems (Secondary Tasks (eg: cell phone Distraction Potential Vehicle Operation Task Vehicle (Primary Task
Driving Task Definition Vehicle Secondary Systems (eg: cell phone) Vehicle Operation Task (Primary Task) Everything Else (Secondary Tasks) Driver Distraction Potential Secondary Sy s t ems (e g: cell phone) Everythin g Else (Secondary Tasks) Driver n
Primary Task Analysis Driver Secondar Everything Else Systems (Secondary Tasks) Distraction (eg: cell phone) Potential Vehicle Operation Task Vehicle (Primary Task
Primary Task Analysis Driver Vehicle Secondary Systems (eg: cell phone) Vehicle Operation Task (Primary Task) Everything Else (Secondary Tasks) Distraction Potential
Vehicle Operation Tasks Vehicle control tasks [skill based Lateral control (steering) Longitudinal control(accel, braking Tactical decisions [rule based] Maneuvering Systems management Strategic decisions [knowledge based] Route selection Goal management Monitoring [skill, rule, knowledge] Situation awareness [Rasmussen: Skill Rule Knowledge Hierarchy]
Vehicle Operation Tasks • Vehicle control tasks [skill based] – Lateral control (steering) – Longitudinal control (accel., braking) • Tactical decisions [rule based] – Maneuvering – Systems management • Strategic decisions [knowledge based] – Route selection – Goal management • Monitoring [skill, rule, knowledge] – Situation awareness [Rasmussen: Skill Rule Knowledge Hierarchy]
Lateral Tracking Loop External environment Strategic Hazard Threats Factors Monitoring Desired Vehicle Goal Goal Route outeLane/Line Lane/Line Com States Vehicle Selection Selection Selection Tracking Wheel Position Default Best line Loo Commanded Traffic Acceleration Instructed Velocity Position
Lateral Tracking Loop Vehicle Goal Selection Route Selection Lane/Line Selection Lane/Line Tracking External Environment Steering Command - Default - Open Loop - Optimized - Commanded - Prior History - Instructed - Wander - Best Line - Lane Switching - Traffic - Speed Route Desired Line Vehicle Goal States Wheel Position (force) Hazard Monitoring Threats Disturbances Strategic Factors Acceleration Velocity Position