Swept Path Analysis on Roundabouts for Three-axle Buses - Review of the Croatian Design Guidelines
Bibliographic record
Abstract
Latest edition of Croatian design guidelines for roundabouts was published in 2014, and its usage is mandatory for intersections on the state roads. This paper offers a review of aforementioned guidelines, with the emphasis on the roundabout geometric design, which are presented through several theoretical examples of suburban roundabouts with various external radii. On these roundabouts swept path analysis for tri-axle bus is conducted, and results of this analysis are commented on. This long passenger vehicle was chosen for the analysis even though it is not defined as a design vehicle in guidelines, due to the following facts: (1) Croatia is a popular tourist destination, with numerous guests arriving from distant locations, and tri-axle buses are a common mean of their transport; (2) swept path analyses have shown that the space needed by the vehicle body during the turning movements is larger for this type of vehicle, compared to design vehicles from the guidelines. Because of that, this paper presents the impact of aforementioned long passenger vehicles on the geometric design of roundabouts.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.003 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.005 | 0.003 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.009 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".