Risk Register
Under NZGTTM, the Risk Register is mandatory — not optional.
Purpose
Documents:
- Site-specific hazards identified
- Controls selected to mitigate each hazard
- Justification for control choices (“why this, not that”)
Cannot Submit Diagram Alone
Under NZGTTM, a TMD without a Risk Register is incomplete.
Lowest Total Risk Principle
LTR acronym
Lowest Total Risk — Core NZGTTM principle: balance all risks, not just one category.
Consider:
- Worker safety
- Road user safety
- Pedestrian/cyclist safety
- Risks created BY the controls themselves
Example: Excessive cones may create driver frustration → dangerous overtaking → higher total risk.
Typical Hazard Categories
| Category | Examples |
|---|---|
| Vehicle | Speed, volume, sight distance |
| Pedestrian | School zones, footpath closures |
| Site | Excavations, overhead work, confined spaces |
| Environmental | Weather, lighting, noise |
| Equipment | Plant movements, deliveries |
Risk Assessment Process
- Identify hazards specific to this site
- Assess likelihood and consequence
- Control — select appropriate measures
- Document reasoning in Risk Register
- Review if conditions change
Evidence Required
Under NZGTTM, you must demonstrate:
- Why chosen controls are appropriate
- Why alternatives were rejected
- How residual risk is acceptable
Think "Auditor Test"
Could you explain your choices to a WorkSafe inspector after an incident?