Bibliographic record
Abstract
Saskatchewan Ministry of Highways and Infrastructure (MHI) completed a review of its Traffic Control Devices Manual for Work Zones (TCDMWZ) due to an unfortunate August 2012 work zone collision that resulted in the death of flagperson. Fatal work zone collisions in Saskatchewan remain statistically low and do not appear to be increasing; injury work zone collisions are trending upward. Collision analysis show inattention/distraction, road conditions, disregard for traffic control devices and speed are contributing factors in work zone collisions. To address the worker and motorist safety issues the MHI partnered with Saskatchewan Government Insurance (SGI) and the Ministry of Justice to facilitate the application of a safe systems framework that includes good engineering; strong legislation; adequate/visible enforcement; and timely and targeted education. Input was solicited from various stakeholders, including the general public, Saskatchewan Heavy Construction Association, police, cities, and the Saskatchewan Safety Council. The analysis of the input received confirmed four key objectives of the work zone safety enhancement study: to alleviate driver confusion; to enhance driver compliance; to improve jurisdictional consistency; and to enhance contractor compliance of the traffic accommodation specifications. The study team’s methodology included gathering stakeholder input, conducting literature searches, and a jurisdictional survey of provinces. The data gathered was analyzed and binned under the safe system’s categories: Engineering; Education; and Enforcement. Each item in the three categories was evaluated further based on its value to meeting the four main objectives. Further analysis included consideration of safety and mobility, legislative requirements and cost. The key changes to the TCDMWZ focused on the engineering aspect and included setting regulatory speed zones supplemented with black and white speed signs, the addition of rumble strips, gateway assemblies, and speed feedback signs on high volume long duration projects. Legislation was changed to allow for Automated Speed Enforcement (photo radar) in work zones and tripling of fines for speeding. To improve education SGI made changes to the driver handbook, while MHI launched a new work zone campaign focusing on regulatory speeds in work zones. Training for contractors and Ministry maintenance staff was provided on the new signing regime and other changes in the TCDMWZ. Continuing work is focused on improving work zone signage, consistency between MHI and cities in Saskatchewan, and enhancements to the mobile (maintenance) work zones. Evaluation of the feedback from the 2013 implementation and a safety audit of the TCDMWZ were carried out to incorporate changes that would further enhance efficiencies and safety in work zones in the province.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.003 | 0.005 |
| Science and technology studies | 0.004 | 0.001 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.069 | 0.011 |
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".