Driver Understanding and Secondary Task Performance While Viewing Traffic Safety Messages on Dynamic Message Signs

Ullman, G L; Higgins, Laura; Chrysler, Susan T; Geiselbrecht, Tina S.; Simek, Chris; Stoeltje, Gretchen; Wolfe, Dave; Benson, Gabby

doi:10.1177/03611981231158626

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…This approach facilitates an analysis of how the fundamental elements of a sign influence information transfer and subsequently explores the optimization of sign layouts. For instance, eye movement tests have been utilized to analyze drivers' comprehension and subtask performance when exposed to traffic safety messages on dynamic signs [58]. The objective was to investigate the impact of sign content and word count restrictions on the layout.…”

Section: Eye-tracking Technology Application For Sign Layout Optimiza...mentioning

confidence: 99%

Optimization of Underground Cavern Sign Group Layout Using Eye-Tracking Technology

Zeng,

Chen,

Zheng

et al. 2023

Sustainability

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Efficient sign layouts play a crucial role in guiding driving in underground construction caverns and enhancing transportation safety. Previous studies have primarily focused on evaluating drivers’ gaze behavior in tunnels to optimize individual traffic sign layouts. However, the lack of a theoretical framework for visual perception of visual capture and information conveyed by sign groups hinders the measurement of drivers’ comprehensive visual perception and the layout optimization of sign groups. To address this gap, this study introduces a calculation method for sign group information volume and a visual cognition model, establishing a comprehensive evaluation approach for sign group visual cognition. Eye movement data, collected using eye-tracking technology, were utilized to evaluate the comprehensive visual perception and optimize the layout of sign groups. The findings indicate that a low information volume fails to enhance recognition ability and alleviate the psychological burden. Conversely, excessive information may result in overlooking signs positioned on the left and top. Furthermore, drivers are unable to improve cognitive efficiency and driving safety even with self-regulation when faced with an information volume exceeding 120 bits within a 100 m span. Overall, this study demonstrates the effectiveness of the proposed method in promoting the long-term safety effect of temporary signage layouts in underground construction areas.

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Section: Eye-tracking Technology Application For Sign Layout Optimiza...mentioning

confidence: 99%

Optimization of Underground Cavern Sign Group Layout Using Eye-Tracking Technology

Zeng,

Chen,

Zheng

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

Evaluation of Traffic Signs Information Volume at Highway Tunnel Entrance Zone Based on Driver’s Visual Characteristics

Han,

Du,

2023

Transportation Research Record: Journal of the Transportation R

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Reasonable and appropriate traffic sign information volume (TSIV) is crucial to ensure road traffic safety, especially at the entrance zones of highway tunnels. This research compares how various levels of TSIV affect both visual characteristics and visual workload of drivers through real road driving tests. Forty participants were recruited to conduct a field driving experiment at six highway tunnels. The eye movement data of drivers were collected by an eye tracker and the effects of TSIV on drivers’ eye movement characteristics, visual stability, visual SampEn (sample entropy), and visual workload intensity were analyzed and evaluated. At the T3 level (48.31 bits) of TSIV, the drivers’ average fixation duration and average saccade duration were both at the lowest value, while the drivers’ average saccade amplitude reached the maximum, and the dispersion of the three eye movement indicators was the smallest. In addition, the drivers’ visual SampEn increased continuously when approaching the tunnel portal, and was the lowest at T3 level. With the increase of TSIV, drivers’ visual workload intensity decreased first and then increased, the minimum being at T3 level. The drivers’ visual behavior is more stable, visual coordination ability is better, and visual workload and psychological pressure are least under the T3 level, which is beneficial to ensure driving safety at the entrance zone of a highway tunnel. Inappropriate levels of TSIV at highway tunnel entrance zones will cause inevitable risks to driving safety.

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Driver Understanding and Secondary Task Performance While Viewing Traffic Safety Messages on Dynamic Message Signs

Cited by 2 publications

References 14 publications

Optimization of Underground Cavern Sign Group Layout Using Eye-Tracking Technology

Optimization of Underground Cavern Sign Group Layout Using Eye-Tracking Technology

Evaluation of Traffic Signs Information Volume at Highway Tunnel Entrance Zone Based on Driver’s Visual Characteristics

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