Show the test.
Label the claim.
This page exists to be checked. Every activity has a status, every metric has a target or a measured result, and nothing unfinished is presented as finished.
Safety by design
Every risk has a control. Every control has a fail-safe state.
Safety is treated as a property of the architecture, not a feature. For each identified risk there is a primary control and a defined state the system falls back to if something fails.
| Risk | System response | Fail-safe state |
|---|---|---|
| Obstacle suddenly enters the path | Graded deceleration; emergency stop if the safe gap is breached | Full stop before contact, brake held |
| Tracking target lost | Short re-acquisition window; hold position if not recovered | Held position — never continues forward blind |
| Communication link interrupted | Heartbeat loss triggers safe state within 1.5 s | Controlled stop in lane, blue light pattern |
| Upper-layer (software) anomaly | Safety layer operates independently of application logic | Motion output frozen by the safety boundary |
| Human needs control | Remote takeover and physical e-stop button | Full mechanical stop, requires explicit re-engage |
Test, learn, improve
A pipeline, not a promise.
Each subsystem moves through the same disciplined sequence. A stage is only considered complete when its success criteria have been met and its failures documented.
Requirement
Written success criteria before any test begins — what must be proven, and how it will be measured.
Prototype
A physical build that can be measured. The current unit is a functional engineering prototype, not a render.
Bench test
Controlled, repeatable measurement on the bench — motors, braking, endurance, lighting.
Controlled field test
Closed greenway sections with defined conditions before any public use.
User trial
Runners, clubs and school teams use the system in supervised sessions and give structured feedback.
Iteration
Failures return to the top of the pipeline as new requirements. Nothing is patched silently.
Evidence trail
What has been built and measured so far.
Each card states its true status. Completed items show their activity; planned items are labelled as planned. Open a card for the full evidence drawer.
HONEST LABELSNo footage is published yet, so every media slot says "Footage scheduled" instead of showing a playable video. Measured cells stay "Pending measurement" until a real test runs with documented conditions.
Key metrics
Current results vs. next-stage targets.
The table distinguishes, row by row, between what has been measured and what is a goal. Where data does not exist yet, the cell says so.
| Metric | Current result | Next-stage target | Status |
|---|---|---|---|
| Follow success rate | Controlled-field test — data collection in progress | ≥ 95% | Test target |
| Mean follow-distance error | Bench measurement pending | ≤ ±0.5 m | Test target |
| Obstacle stop distance | Bench test pending | ≤ 1.5 m | Test target |
| Single-session endurance | Bench test pending | ≥ 2.5 h | Test target |
| Night visibility range | Design validation pending | ≥ 200 m | Test target |
| Runner & club UX rating | Interviews underway; scoring protocol defined | ≥ 4.0 / 5 | Study in progress |
METHODOLOGYEach published result will include: test procedure, environment (surface, light, weather), sample size, pass/fail criteria, raw data link and iteration notes. A row marked "Test target" contains no measured value yet — targets are engineering goals for the next stage, not results.
Development roadmap
What comes next, in order.
-
Now
Bench validation of motion & braking
PWM control curves, ramp times, stop distances and endurance on the bench. First controlled-field follow runs.
-
Phase 2
Controlled field trials on greenways
Closed greenway sections with obstacle and night scenarios. Success criteria published before each trial.
-
Phase 3
User trials with runners, clubs and schools
Supervised sessions with structured feedback; UX scoring against the ≥ 4.0/5 target.
-
Phase 4
Multi-unit group coordination
Group map, pace bands and multi-runner support in real club training.
-
Vision
Mobile support infrastructure
Fleet-based support for parkruns, school programmes and marathon camps — the greenway service layer.
References
External sources used across this site.
- WHO — Global Status Report on Physical Activity 202219 Oct 2022
Global insufficient-activity estimates (adults, adolescents). - WHO, 2024 — 1.8 billion adults (2022 data)26 Jun 2024
News release for the 1.8 billion adults figure, based on 2022 global data. - WHO — Guidelines on Physical Activity and Sedentary Behaviour25 Nov 2020
Evidence base for activity recommendations. - Strava — Year in Sport 20232023
Running as the most-logged sport worldwide. - American Heart Association — CPR & ECC Guidelines 2020Oct 2020
Time–survival relationship referenced in the Why Eos context note. - United Nations — Sustainable Development Goals2015
SDG 3, 9 and 11 target texts for the Impact mapping.