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Title:

Use of Fixation Heat Maps to Evaluate Visual Behavior of Unfamiliar Drivers on Horizontal Curves

Accession Number:

01519603

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Blurbs/171981.aspx

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Order URL: http://worldcat.org/isbn/9780309295499

Abstract:

This paper presents an innovative method of visualizing eye-tracking data by using heat maps (color-coded contour maps showing distributed data). Heat maps of eye fixation points were created from data collected while drivers navigated a rural road. Comparable road segments were used to identify how a driver’s visual attention changed while the driver approached and navigated a curve and to address how chevrons and time of day affected fixation patterns. Measures of the centroid and dispersion of each heat map were used to quantify the changes in visual behavior. The results suggest that as drivers approach curves, their fixation patterns become more focused, particularly during the daytime, when their gazes are more prone to shift away from the road scene on long tangents. Chevrons are most useful at night and guide drivers to select a narrower field of view on curve approaches. There were no consistent differences in fixation points within curves that had chevrons as compared with curves that did not, for either daytime or nighttime conditions. This finding suggests that drivers derive little benefit from chevrons within the curve as compared with on the approach. This research is particularly valuable because it investigates a new method for evaluating the effectiveness of traffic control devices and characterizing the driving experience.

Monograph Accession #:

01552937

Report/Paper Numbers:

14-4247

Language:

English

Authors:

Brimley, Bradford K
Carlson, Paul J
Hawkins Jr, H Gene

Pagination:

pp 16–26

Publication Date:

2014

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Issue Number: 2458
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

9780309295499

Media Type:

Print

Features:

Figures (8) ; References (20) ; Tables (4)

Subject Areas:

Highways; Safety and Human Factors; I73: Traffic Control; I82: Accidents and Transport Infrastructure; I83: Accidents and the Human Factor

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 3:28PM

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