Below is the link to the document you can read to understand some of the underpinning Risk Based Approach the update to CoPTTM will be born from.
If you have any feedback on the document please email copttm.consult@nzta.govt.nz with subject heading “CoPTTM Review”
https://civilcontractors.co.nz/filescust/CMS/Documents/NZGTTM-Part-10-Managing-Risk-V1.pdf