Driver behaviour in unexpected critical events and in repeated exposures – a comparison
DOI: 10.1007/s12544-013-0108-y
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Summary
This study investigates whether truck driver steering behavior observed during repeated exposures to a critical event correlates with behavior during an unexpected exposure to the same event. The research addresses a practical challenge in driver modeling: collecting sufficient data for statistical analysis often requires exposing drivers to scenarios multiple times, yet it is unclear if repeated exposure alters natural behavioral responses. While previous studies indicated that repeated exposure significantly reduces brake reaction times and alters braking intensity, the impact on evasive steering behavior remained less understood. The authors aimed to determine if data from repeated trials could validly supplement data from unexpected trials for model development. The experiment utilized a high-fidelity moving-base truck simulator at the Swedish National Road and Transport Research Institute. Twenty-four truck drivers, divided into low- and high-experience groups, participated. Each driver first encountered an unexpected critical scenario where a passenger car overtook and abruptly braked in front of the truck on a slippery road surface. Subsequently, drivers underwent six repetitions of a slightly modified version of this scenario, interspersed with "catch trials" where no evasive action was required to prevent anticipation. The repeated scenario parameters were adjusted to ensure drivers initiated steering at a similar time as in the unexpected case. Steering maneuvers were analyzed using statistical tests on variables including time-to-collision (TTC), lateral position, speed, steering wheel angles, and steering wheel reversal rates. The results indicated that drivers preserved most steering behavior characteristics between the unexpected and repeated settings. Specifically, there were no significant differences in lateral position, longitudinal speed, maximum steering wheel angles, or steering wheel rates between the two conditions. The only significant difference found was in the TTC at steering initiation, which was approximately 0.5 seconds earlier in the repeated events, resulting in a slightly less critical situation. However, individual driver characteristics, such as maximum steering angles and rates, showed very high correlation (r > 0.9) between the two settings, indicating strong preservation of individual behavior. Furthermore, analysis of learning effects across repetitions showed no significant changes in steering performance, suggesting that drivers did not alter their avoidance strategy over multiple exposures. The study concludes that steering behavior is largely preserved across unexpected and repeated exposures, unlike braking behavior. This finding implies that data collected from repeated simulator exposures can be validly used alongside data from unexpected events for driver modeling purposes. By designing repeated scenarios carefully, researchers can significantly increase the volume of collected data without compromising the validity of the behavioral characteristics being modeled. This approach benefits the development of robust driver models by allowing for more extensive data collection from fewer participants, addressing the need for large datasets while accounting for individual differences.
Provenance
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-06-25 |
| archive | success | canonical_url | — | — | 1 | 2026-06-26 |
| extract | success | cached | — | — | 2 | 2026-06-26 |
| clean | success | clean | — | — | 1 | 2026-06-26 |
| chunk | success | chunk | — | — | 1 | 2026-06-26 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-26 |
| enrich | success | openalex | — | — | 1 | 2026-06-26 |
| promote | success | — | — | — | 1 | 2026-06-25 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-26 |
| tag | success | vector_similarity | — | — | 6 | 2026-06-26 |
| verify | success | — | — | — | 1 | 2026-06-26 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified.
Topics
Ranked by relevance to this paper. Hover a topic for its definition.
- steering pattern
- automation surprise
- naturalistic crash near crash
- crash reconstruction hf
- driver post crash behavior
- braking response
Information type
What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).
- Empirical Findings: behavioral performance data
- Methodological Resource: validation psychometrics
- Theoretical Contribution: computational model