3204 A characteristic analysis of driving behavior to rear-end collision warning using a driving simulator
DOI: 10.1299/jsmetld.2009.18.283
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Summary
This study investigates driver responses to rear-end collision warnings generated by Pre-Collision Systems (PCS), addressing a gap in understanding how ordinary drivers recognize and react to such alerts in real accident scenarios. While PCS technology aims to mitigate crashes through warning buzzers, brake assist, and intervention braking, the effectiveness of these systems depends heavily on driver behavior. The researchers sought to quantify these reactions and identify variations across different age groups to inform system development and evaluation. The experiment utilized a highly realistic driving simulator featuring a real vehicle cabin, a 360-degree dome projection system, and a large-scale motion platform with a 35-meter translation distance to accurately simulate deceleration and vibration. One hundred and four ordinary drivers, categorized into three age groups (20s–30s, 40s–50s, and 60s), participated in two rear-end collision scenarios: one involving a stopped lead vehicle (LVS) and another involving a decelerating lead vehicle (LVD). To simulate distracted driving, participants performed a secondary task involving a touchscreen display located below the navigation screen. The warning was triggered when the time-to-collision reached 1.7 seconds. The results indicated that most drivers recognized the danger and applied brakes upon hearing the warning, even if they had little prior knowledge of the PCS. However, significant age-related differences were observed. Drivers in their 60s exhibited shorter distraction times and were more likely to be looking forward before the warning occurred compared to younger groups. Conversely, elderly drivers showed a wider variation in reaction behaviors; approximately 10% of those in their 60s recognized the warning but failed to brake, and they were more likely to attempt steering avoidance rather than braking. This tendency to steer was attributed to a lack of awareness of adjacent lanes. Regarding braking performance, the average warning reaction time was approximately 1.1 seconds, and the average peak deceleration was 5.5 m/s², though both metrics showed considerable variability. Drivers in the LVD scenario achieved slightly less speed reduction (1.3 m/s) compared to the LVS scenario (2.8 m/s) due to the shorter time available before collision, despite similar reaction times. The study concludes that PCS warnings are effective in prompting braking actions in most drivers, regardless of their understanding of the system. However, the variability in elderly drivers' responses highlights the need for systems that account for diverse reaction patterns, particularly the tendency toward steering avoidance. The findings suggest that ensuring elderly drivers recognize their surrounding environment is crucial for effective collision avoidance. The high realism of the simulator was validated by its ability to produce deceleration profiles similar to real-world driving, supporting its use for future safety research.
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-06-19 |
| archive | success | canonical_url | — | — | 1 | 2026-06-26 |
| extract | success | cached | — | — | 2 | 2026-06-26 |
| clean | success | clean | — | — | 1 | 2026-06-20 |
| chunk | success | chunk | — | — | 1 | 2026-06-20 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-20 |
| enrich | success | openalex | — | — | 1 | 2026-06-20 |
| promote | success | — | — | — | 1 | 2026-06-19 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-26 |
| tag | success | vector_similarity | — | — | 6 | 2026-06-20 |
| verify | success | — | — | — | 1 | 2026-06-26 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified.
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- Empirical Findings: behavioral performance data