Within each category, there are Network Roadside Risk Intervention Threshold (NRRIT) scores for Normal Design Domain, Extended Design Domain, and Design Exception conditions. These scores set the maximum level of risk a project should accept for untreated roadside hazards.
For more detail, check out Section 2 of the DTP Supplement to Austroads Guide to Road Design Part 6.
Want to build your technical knowledge in roadside risk management, barriers and design? There’s still time to register for the upcoming course:
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