Non-Intersection-Related Crashes at Midblock in Urban Divided Arterial Road with High Truck Volume
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
This study analyzes the crashes that occur at mid-block called “mid-block crashes” in an urban arterial road. The association of mid-block crashes with various factors was examined using the 7-year (2000-2006) crash data on a section of a divided arterial road in Windsor, Ontario, Canada. To account for difference in traffic volume and road geometric factors between two directions of travel in a divided road, the data were collected for two directions separately. The results of log-linear models using these bidirectional data show that mid-block crashes are more likely to occur on the road sections with access point and high percentage of truck (> 20%). It was also found that the effects of access point and truck percentage were not statistically significant when the unidirectional data were used. A sensitivity analysis was also performed to identify the bidirectional variables affecting crash frequency by direction. It was found that the difference in truck percentage between two directions can most effectively reflect the difference in crash patterns by direction. The results of logistic regression models show that median opening, driver age/gender, lighting, time of day and day of week are associated with different types of crashes classified by the vehicles involved in crashes. The study shows the importance of analyzing mid-block crashes using the bidirectional data by vehicle type in urban divided arterial roads with high truck volume.
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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 | 0.003 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 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