论文信息 - THE EFFECTS OF ROADWAY ENVIRONMENT AND FATIGUE ON SIGN PERCEPTION

THE EFFECTS OF ROADWAY ENVIRONMENT AND FATIGUE ON SIGN PERCEPTION

Drivers were stopped 200 m (656 ft) after passing a warning sign and tested for their recall and recognition of the sign. An average of 5 to 10% of drivers registered the sign under various conditions, but these results were independent of specific sign content or roadway environment. Both objective and subjective measures of fatigue were related to the probability of seeing a sign on a straight and level road but not on a hilly and winding road. It was concluded that under normal daylight conditions warning signs are either redundant (contain information directly available) or irrelevant to the driver's perceived needs and the driving task. Before ruling out their usefulness, warning signs should be evaluated under conditions of degraded visibility.

David Shinar | Amos Drory

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