Abstract
Driver’s gaze is a highly selective dynamic process, which ensures a precise perception of moving objects, speeds and spatial expansions in road traffic. Thus, the gaze behavior of drivers determines largely their driving behavior, and is crucial for traffic safety. With the aid of modern technology, the gaze behavior can be precisely recorded during driving. This paper describes part of the research, which has been undertaken in order to investigate the relationship between driver’s gaze behavior and horizontal alignment geometry. It is known, that driver’s stress state and gaze concentration are not the same when steering a vehicle along straight stretches and within curves. The stress is higher in curves and this leads to an increased attention. The gaze behavior in left and right horizontal curves is characterized by certain gaze patterns, which clearly differ from each other. In this respect, appropriate investigations and analyzes have been also carried out. Different parameters have been calculated in order to assess and quantify the gaze behavior. By evaluating these parameters, the spatial and temporal concentration of the driver’s gaze as well as the intensity of information acquisition and processing have been analyzed along straight stretches, left and right horizontal curves.
Highlights
Over 90% of the information by driving is acquired through the visual sense channel
Driver’s gaze is a highly selective dynamic process which ensures a precise perception of moving objects, speeds and spatial expansions
As can be seen in figure 3, the number of fixations on straight sections to the left and right of the main visual axis is almost the same. 46.7% of all fixations are registered to the left of the main gaze axis and 52.3% are to the right
Summary
Over 90% of the information by driving is acquired through the visual sense channel. The eye is the only sense organ, which can be aligned selectively through the eye movements and allows the detection and localization of movable and immovable objects. Since information reception and processing are the basis for action decisions, their realization and control in road traffic, the driver's gaze behavior determines largely his driving behavior, and is crucial for traffic safety. Thereby, the analysis of the gaze behavior is a method, by which the perceptual psychological factor in the interaction between driver, vehicle and road can be considered. It is possible to investigate how the driver's gaze behavior is influenced by the horizontal alignment geometry. The analysis of the visual behavior makes the investigation of the temporal as well as the spatial course of the detailed information flow possible. It is known that driver's stress state and gaze concentration are not the same when steering a vehicle along straight sections and within horizontal curves. The gaze behavior in left and right horizontal curves is characterized by certain gaze patterns, which clearly differ from each other
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