Integrated multifactor assessment of road geometry, vehicle types and weather diversity on bilateral transverse slopes: Bridging gaps in dynamic modeling.
DOI: 10.1371/journal.pone.0340887
archive: archived pipeline: cataloged verified
Get this paper ↗ (DOI — opens at the source; we link to it, we don't host it)
Summary
This study investigates the impact of bilateral transverse slopes on vehicle dynamics during lane-changing maneuvers, addressing a gap in research regarding how drainage-oriented road geometry interacts with vehicle type, speed, and weather conditions. While bilateral slopes are standard for suburban drainage, their effect on lateral stability—particularly for mixed traffic under adverse weather—remains underquantified. The authors aim to determine if these slopes compromise safety and to identify critical thresholds for rollover and loss of control. The researchers employed CarSim and TruckSim software to simulate lane-changing maneuvers across three vehicle categories: Class E sedans, Class E SUVs, and two-axle trucks. The experimental design varied four transverse slope levels (0%, 1.5%, 2%, and 2.5%), four speeds (80, 90, 110, and 120 km/h), and three weather conditions defined by friction coefficients: dry (0.9), rainy (0.5), and snowy (0.28). Driver behavior was standardized using a constant-speed, no-braking protocol based on ISO 3888-2 double lane change tests to isolate geometric and environmental effects. Key dynamic parameters analyzed included steering angle, slip angle, rollover angle, torsional moment, lateral acceleration, and yaw rate. Results indicate that increasing transverse slopes moderately affect steering and rollover angles, while slip angles and torsional moments remain largely stable across all vehicle types. Trucks exhibited the highest sensitivity to speed and slope changes, with significant control challenges emerging at speeds above 90 km/h on higher slopes. In contrast, sedans and SUVs demonstrated stable behavior with minimal variations in safety parameters. Adverse weather, particularly snowy conditions with low friction, amplified instability risks for all vehicles. The study found that bilateral transverse slopes up to 2.5% do not significantly compromise vehicle stability under normal conditions. The findings suggest that bilateral transverse slopes can be safely incorporated into suburban road designs for drainage purposes without major safety compromises, provided speed limits are respected, especially for heavy vehicles. The research highlights the need for tailored Electronic Stability Control (ESC) adjustments for trucks operating at high speeds on sloped roads. These insights provide a mechanistic basis for optimizing road geometry standards and enhancing active safety systems to mitigate rollover risks in mixed-traffic environments.
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.
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | PubMed Central | — | — | 1 | 2026-06-19 |
| archive | success | unpaywall | — | — | 2 | 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.
Topics
Ranked by relevance to this paper. Hover a topic for its definition.