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Journal Article

Citation

Borowsky A, Shinar D, Parmet Y. Transp. Res. F Traffic Psychol. Behav. 2008; 11(6): 459-465.

Copyright

(Copyright © 2008, Elsevier Publishing)

DOI

10.1016/j.trf.2008.06.003

PMID

unavailable

Abstract

Background According to police reports, failure to heed signs is one of the most frequent causes of accidents. We examined situations in which experience might paradoxically impair detection and timely identification of traffic signs: when they are located in unexpected places.Hypothesis Experienced drivers have a well-learned schema for scanning the roadway, and will have difficulty detecting traffic signs when their location violates the expectations.Method Twenty experienced drivers were exposed briefly to pictures of real street and road scenes; some included "no right-turn" (NRT) signs in the expected location (on the right curb) and some contained the same sign in an unexpected location (on the left curb). Participants' eye movements were recorded during the experiment.Results Drivers were less likely to identify the NRT sign when it was located at the unexpected location. Females were less sensitive to sign location and their performance was much better than that of males.Conclusions To increase their timely probability of identification, traffic signs should be posted in expected locations. Schema that drivers bring to the road enables them to handle large amounts of information, but the same schema can endanger drivers if traffic signs placement does not conform to the schema.Implications When signs are misplaced, crash causes can be due to inappropriate design, rather than inappropriate driving. Highway designers should ensure that their design conforms to standards that shape drivers' expectations.

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