| Capability | What it is |
|---|---|
| Gated pipelines | Each stage writes to a register; QA gates run before anything ships; versions are kept so any figure can be reproduced. |
| Estimates with honest uncertainty | Every before/after study returns its estimate and interval. Weak studies are labelled by their uncertainty, not suppressed — see Barry Road. |
| Published source disagreement | For traffic volume we published where official sources disagree, rather than treating one source as truth. |
| Documented failure modes | For AI vision we record which models miss what (one model returned systematic false negatives; re-reading recovered 56 of 64). |
| One QA gate for every source | Signal evidence from scanned maps, spreadsheets and site-name geometry all pass the same geographic and value checks. |
| Pre-registered tests | Road-toll trend explanations are stated with falsification gates before the data arrive. |
| Multi-model verification | Several independent AI models review significant decisions; every objection must be ruled on with evidence, and the trail is kept. |
Source before action.
Root cause before reply.
Every estimate ships with its uncertainty.