Diverging drivers’ visual attention and search behavior in closely spaced tunnel-interchange structures: a field study

Key Points

• The aim is to understand how diverging drivers navigate challenges in closely spaced tunnel-interchange structures by adapting their visual attention.
• Conducted a field study observing driver behavior in tunnel-interchange structures.
• Assessed drivers' visual attention engagement and allocation.
• Analyzed visual search strategies used by drivers.
• Drivers show varying levels of visual attention based on the complexity of the tunnel-interchange structures.
• Adjustments in search strategies are correlated with the proximity of guide signs.
• Findings can inform better design and placement of guide signs to aid driver navigation.