Drivers' dynamic perception of accident risk and safety in underground road merging areas
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View abstract on PubMed
Summary
This summary is machine-generated.Higher speeds in tunnels reduce driver reaction time, delaying hazard identification and safety assessments. This increases accident risk, especially in complex merging zones.
Area Of Science
- Traffic Safety Engineering
- Human Factors in Transportation
- Road Tunnel Design
Background
- Multi-entry underpass road tunnels present unique challenges like downhill approaches, monotonous visuals, and underground merging.
- Limited sight distance and zones contribute to driver perception and judgment errors, elevating crash risks (rear-end, lateral).
Purpose Of The Study
- To analyze dynamic risk and safety perception in main and secondary road merging areas of underpass tunnels.
- To evaluate the impact of varying speeds on driver perception indicators like Identify Merging Time (IMT), Perceive Hazard Time (PHT), and Assess Safety Time (AST).
Main Methods
- Utilized real vehicle test video data and driving simulator experiments.
- Collected key indicators: Identify Merging Time (IMT), Perceive Hazard Time (PHT), Assess Safety Time (AST).
- Applied Linear Mixed Model (LMM) to assess speed's effect on indicators across 6 speeds.
Main Results
- Identify Merging Time (IMT) decreased with increasing speed; main road showed highest Identify Merging Delay Rate (IMDR) at 38.667%.
- Perceive Hazard Distance (PHD) extended with speed; secondary road drivers perceived hazards earlier (38.167–46.683 m past gore point).
- Secondary road PHD was less speed-dependent, more influenced by the merging process itself.
Conclusions
- Higher speeds significantly reduce driver reaction time, leading to delayed perception and safety assessment in tunnels.
- Findings offer critical references for optimizing underground merging area design and improving driver safety perception.
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