Brake testing methodology study : driver effects testing
archive: archived pipeline: cataloged verified
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Summary
This study investigated the variability in light vehicle stopping distance tests attributable to differences between drivers to support the development of standardized brake testing procedures. Researchers conducted 648 stopping distance tests using three expert drivers, three different vehicles, and varying conditions including wet and dry asphalt surfaces with anti-lock brake systems either enabled or disabled. The analysis revealed that while driver differences had a statistically significant effect on stopping distances, the magnitude of this effect was relatively small compared to vehicle-to-vehicle differences. The interaction between ABS status and surface condition was also significant, indicating that ABS performance varied more notably on wet surfaces. The study concluded that the test procedure could distinguish between vehicles with high statistical certainty, though it required a large number of replications and drivers, suggesting that fewer resources might suffice for detecting large performance differences.
Key finding
Differences between drivers had a statistically significant but small effect on stopping distance compared to the larger variability caused by differences between vehicles.
Methodology
lab_experiment
Sample size: 3
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (7 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
| archive | success | — | — | — | 1 | 2026-05-23 |
| extract | skipped | empty | — | — | 4 | 2026-06-10 |
| clean | success | — | — | — | 1 | 2026-06-01 |
| chunk | success | — | — | — | 1 | 2026-06-01 |
| embed | success | — | — | — | 1 | 2026-06-02 |
| enrich | success | — | — | — | 1 | 2026-05-23 |
| promote | success | — | — | — | 1 | 2026-05-23 |
| summarize | success | llm | qwen3.6-27b | — | 3 | 2026-06-01 |
| tag | success | vector_similarity | — | — | 19 | 2026-06-11 |
| verify | success | — | — | — | 1 | 2026-06-03 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-01; verification: verified.
Topics
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Information type
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- Empirical Findings: behavioral performance data
- Methodological Resource: validation psychometrics