Björn Peters, VTI Active Attention A driving simulator experiment

Björn Peters, VTI Active Attention Objective Evaluation of an method to detect driver fatigue impairment based on analysis of the driver’s micro control

Björn Peters, VTI Active Attention Method 10 shift workers ( 5 male, 5 female ) 2 hours drive, two occasions (morning) – after a night’s work – after a normal sleep Rural road, oncoming cars Double blind test – Data in 5 minute blocks, random order, missing data replaced – equal number of sections for all subjects

Björn Peters, VTI Active Attention Subjects Mean age 37 years Mean license age 16.4 years Mean annual driving distance 9500 km 4 had near accident experiences Most shift workers for years

Björn Peters, VTI Active Attention Measures Driving behaviourPhysiology – speed - EOG ( duration, freq.) – lateral position – TLC KSS ratings – steering wheel angle - driver (5 min) – lateral acceleration - test leader (5 min) – steering wheel torque Questionnaires - pre and post

Björn Peters, VTI Active Attention Road – vehicle geometry

Björn Peters, VTI Active Attention Analysis approach Comparing AA results to KSS driver ratings – correlation – multiple regression Reference – Driver’s lateral and longitudinal control – Blink duration (< 0.5 s) and frequency – Test leader KSS ratings

Björn Peters, VTI Active Attention KSS Driver Ratings

Björn Peters, VTI Active Attention KSS Driver and Test Leader

Björn Peters, VTI Active Attention Results - driving behaviour 4 drivers were not able to complete fatigued driving condition 11 “accidents” – 4 wheels off the road – 10 “fatigued”, 1 “alert” – 10 at KSS level 9, 1 at KSS level 8

Björn Peters, VTI Active Attention Correlations – all drivers KSS – Driving behaviour

Björn Peters, VTI Active Attention Correlations per driver KSS – Driving behaviour

Björn Peters, VTI Active Attention Regression Analysis Driver 1

Björn Peters, VTI Active Attention Correlations – all drivers KSS to AA0 -5

Björn Peters, VTI Active Attention Correlations per driver KSS to AA0 -5

Björn Peters, VTI Active Attention Driver 1

Björn Peters, VTI Active Attention Driver 3 Stopped driving

Björn Peters, VTI Active Attention Driver 8

Björn Peters, VTI Active Attention Driver 1 block 3

Björn Peters, VTI Active Attention Driver 1 – block 36

Björn Peters, VTI Active Attention Steering angle Driver 1

Björn Peters, VTI Active Attention Road departures 4 wheels off the road

Björn Peters, VTI Active Attention Subject 3 – block 34

Björn Peters, VTI Active Attention Subject 3 – block 35