Regulation of end‐of‐life vehicle (ELV) retirement in the US compared to Canada
Bibliographic record
Abstract
To understand the life cycle impacts of end‐of‐life‐vehicles (ELVs) in North America and to reduce these impacts, it is necessary to appraise the regulatory framework that influences the business of managing ELVs. In particular, regulations governing the ‘retiring’ of severely damaged or old vehicles promote safety, protect consumers, and reduce fraud. An unintended, but environmentally beneficial effect from such legal control is to stimulate a greater supply of vehicle parts or materials for direct reuse, remanufacturing or recycling. Yet business, market and regulatory factors vary widely from one region to another in North America. As a result, when and in what condition vehicle parts are returned to reuse and recycle streams vary widely. This paper reviews the regulatory mechanisms and voluntary approaches governing the first stage in managing ELVs – otherwise known as ‘vehicle retirement’ – in Canada and the US.
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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 | 0.006 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.005 | 0.002 |
| Scholarly communication | 0.003 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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 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".