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Title: Effects of Cognitive and Perceptual Loads on Driver Behavior
Accession Number: 01123088
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: The objective of the study was to examine how cognitive and perceptual loads affect driving strategies and the guidance of attention. A cue–target search task was implemented, and two experiments manipulated prioritization of a primary task and working memory load (Experiment 1) and congruence and salience of targets (Experiment 2). The cues and nontarget distracters in the environment were designed to influence discriminability and predictability of target locations (e.g., target pedestrians or target squares). Driving-related variables along with reaction times and accuracy scores were collected. The load theory of attention was used as a framework for the design of the experiments. The study was designed to expand the findings of load theory research to a more realistic driving environment and identify how drivers strategized in conditions of cognitive and perceptual loads. In line with previous studies, both experiments found better lane control during the dual-task period when compared with single-task performance. The other driving results showed detrimental effects of performing secondary tasks while driving. In Experiment 1, prioritization increased target accuracy while decreasing reaction times. In Experiment 2, high salience of targets increased accuracy, but curiously increased reaction times for target detection. Although some results were not as expected, the perceptual load manipulation had an overall negative effect on visual search. In-vehicle interfaces could benefit by incorporating designs that do not exhaust drivers’ working memory or distract them with complex displays.
Monograph Accession #: 01149180
Report/Paper Numbers: 09-2267
Language: English
Authors: Redenbo, Seth JLee, Yi-ChingPagination: pp 20-27
Publication Date: 2009
ISBN: 9780309142670
Media Type: Print
Features: Figures
(5)
; References
(23)
TRT Terms: Uncontrolled Terms: Subject Areas: Highways; Safety and Human Factors; I83: Accidents and the Human Factor
Files: TRIS, TRB, ATRI
Created Date: Jan 30 2009 6:37PM
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