Tools
Infrastructure Risk Rating Tool
The Infrastructure Risk Rating Tool (IRRT) produces network-level risk ratings using geometric, traffic, and crash-history data. IRRT is the technical basis of AusRAP star ratings and supports strategic road-safety investment planning.
The Infrastructure Risk Rating Tool (IRRT) produces network-level risk ratings using geometric, traffic, and crash-history data. IRRT is the technical basis of AusRAP star ratings and supports strategic road-safety investment planning.
- Road safety engineers and practitioners
- Asset managers prioritising investment
- Designers assessing proposed treatments
- Auditors validating Safe System alignment
Provides evidence-based scoring and ranking to support treatment selection, investment prioritisation, and network-wide decision-making.
Use IRRT when you need to:
Assess the in-built safety of an existing road network; support AusRAP star rating applications; prioritise network-wide infrastructure upgrades; track network safety performance over time.
The tool is delivered as a web application. Typical workflow:
Upload your network data (geometry, traffic, crash history); run the risk model; review segment-level ratings; export star-rating equivalents and investment priorities.
Guides & Manuals
Supporting documentation for IRRT users.