Given the recent poliferation of in-vehicle systems, understanding how drivers deal with the visual demands of driving while operating these systems is essential. To provide such, 16 subjects drove a simulator on roads with long curves of several different radii while providing verbal responses to questions about the content of electronic maps displayed on the center console. In additional sessions, visual demand of the same road segments was measured using the voluntary occlusion technique. Task completion time while driving was correlated with static completion time, generally increasing when the task was performed while driving. It decreased, however, for short tasks, especially when only one glance was made. As driving workload increased, subjects made shorter glances at the display, made more of them, but waited longer between glances. The net effect was a slight decrease in total glance duration (eyes-off-the-road time). As driving workload increased, driving performance became worse.
Effects of Visual Demand and In-Vehicle Task Complexity on Driving and Task Performance as Assessed by Visual Occlusion
1999
78 pages
Report
No indication
English
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