00639983

Component

http://onlinepubs.trb.org...trr/1993/1403/1403-003.pdf

https://scholar.google.co...hlen&publication_year=1993

The U.S. driver education and training literature was reviewed to identify rules and recommendations with regard to driver eye scanning behavior and strategies, where drivers ought to fixate their eyes when driving, specifically when driving through a curve. In addition, driver eye scanning behavior was recorded and analyzed for nine drivers driving through right curves with radii of 73.15 m (240 ft) (unlighted Interstate entrance and exit ramps, 270-deg turns) at night with low beams. An instrumented car with a corneal reflection technique television eye scanning system was used. Each driver made a number of runs through the curves at an average speed of 41.8 km/hr (26 mph), and the driver eye fixation sequences were analyzed for three to eight runs per driver, yielding 51 analyzed runs. Of most importance for the eye fixation sequence analysis were the eye fixation positions on the curves ahead of the car. Besides the eye fixation sequences analyzed in this study, previously analyzed spatial and temporal eye scanning data from the same subjects were used to compare the eye scanning rules with the actual observed eye scanning behavior. Matrices and histograms were established to indicate the conditional frequencies for forward- and backward-progressing eye fixation sequences, given a previous type of eye fixation sequence. The results showed that the expected number of consecutive forward eye fixations (including forward-ending eye fixations) is 1.89, while that of backward eye fixations (including backward-ending eye fixations) is 1.26. The results of the exploratory study indicate that drivers use both forward and backward eye fixation sequences and that there appears to exist no predictable, simple, systematic eye fixation sequence patterns within a driver (within a run or between runs) or between drivers when driving through a curve. Since no such sequence was discovered, it may be tentatively concluded that various eye fixation sequences and strategies provide adequate visual input for proper curve driving. Therefore, there is probably no need for very specific recommendations for objects- or sequence-oriented eye fixation for curve driving, or even for driving on a straight section of a highway.

This paper appears in Transportation Research Record No. 1403, Driver Performance: Measurement and Modeling, IVHS, Information Systems, and Simulation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

00669186

English

p. 14-22

1993

Transportation Research Record

Figures (8) ; References (12) ; Tables (1)

Alternatives analysis; Drivers; Eye fixations; Field studies; Highway curves; Human subject testing; Interchange ramps; Low beamed headlamps; Night

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

TRIS, TRB, ATRI

Dec 20 1993 12:00AM

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