Application of Certification/Safety Experience Gained in Fuel Cell Public Transportation With Buses Towards Marine Applications of Fuel Cells
Bibliographic record
Abstract
Fuel cells with hydrogen fuel have now been demonstrated in public transportation for over 15 years worldwide. During this time Ballard-powered fuel cell buses have clocked more than 300,000 hours while accumulating over 5 million kilometers. These public transport buses have been certified and homologated in the USA, Europe, Australia and China. While certification agencies such as TUV, CHP, NHTSA, and other local governing bodies have been involved with the approval process for ensuring safety of personnel and equipment, the components themselves have met stringent requirements of NFPA, NGV, SAE, ASME, ANSI and other governing organizations. This paper highlights the various standards and safety concepts used in the approval process of public transportation using fuel cell buses. Since marine ferries involve movement of personnel, it is recommended that many of the requirements used for public buses can be easily adapted for marine applications of fuel cells. Paper published with permission.
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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 | 0.009 | 0.009 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
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".