Investigation of the Impacts of Shared Autonomous Vehicle Operation in Halifax, Canada Using a Dynamic Traffic Microsimulation Model
Why this work is in the frame
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Bibliographic record
Abstract
This study presents a novel sequential modeling framework of shared autonomous vehicle (SAV) operation in the Halifax transport network. The Halifax regional transport network model is used to generate business-as-usual traffic demand in the morning peak hours. A new module of SAV assignment upon trip request is introduced and integrated with the traffic microsimulation model to simulate the SAVs' occupied and empty trips in the network. The proposed framework demonstrates the capability to evaluate service performance of SAVs with different level of fleet sizes in the network. Model results suggest that fleet size of 900 SAVs serves 20% of the total morning commute trip requests. Traffic condition is improved for the first hour of peak periods as average speed increases and total travel time requirement decreases during operation of SAV fleet in Halifax. The results provide insights into SAV system planning in accordance to anticipated challenges of SAV adoption in transportation network.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 it