How do you decide which road safety assessment technique to use at what stage of your project?

Yesterday our Principal Engineer, Kenn Beer, ran a bespoke one-day training workshop for the ACT Government to demystify the many road safety assessment techniques available, including (but not limited to):
– Road Safety Audit
– Safe System Assessment
– Safety In Design
⭐ iRAP / AusRAP
– Network Roadside Risk assessment (as per new AGRD Part 6) (NRRIT)
– Crash Reduction Study/Blackspot Study
⚠ Crash investigation
⚙ Infrastructure Risk Rating (IRR)
– Heavy Vehicle Route Assessment
– Disability Discrimination Act (DDA) Audit/Review
– Network Safety Plans (including road stereotypes)
⭕ Vision Zero Planning (Lösningar technique)
– Safe Routes to School assessment
– Speed Zone Review
– Transport Impact Assessments
– Local Area Traffic Management studies / Placemaking study