This study addresses two key questions regarding the causes of sleep-related accidents: 1) Can drivers anticipate sleep onset well enough to avoid sleep-related accidents? 2) How do drivers use physiological cues of sleepiness in making judgments regarding the riskiness of continued driving?
Instrument panels in modern vehicles are often equipped with numeric readouts and digital bargraph displays instead of (or in addition to) traditional analog display.
Research has shown that use of cellular phones does not interfere significantly with the ability to control an automobile except among the elderly, where potentially dangerous lane excursions can occur. However, the effect of cellular phones as a possible distraction has not been investigated.
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