Decision-led approach to project development – feedback from users

Consultation closed Thursday 16 October 2025.

The draft guidance for NZTA‘s Decision-led approach to project development was published 9 September 2025.  We sought feedback from consultants who’ve already piloted the approach on recent investment cases for infrastructure projects so that we can further refine the document before we publish the final guidance.

Decision-led approach

We’re making the way we plan and deliver state highway infrastructure projects more efficient and effective.

Taking a decision-led approach to develop state highway infrastructure projects is one of the ways we’re improving how we set up our projects to support faster, cost-effective outcomes. Decision-led helps drive clear management of project scope, budget and risk.

We’re currently using the approach to support the successful delivery of the Roads of National Significance (RoNS) and the Northwest Busway project.

As of July 2025 this approach is being applied across NZTA state highway infrastructure projects.

After prototyping the approach on several investment cases over the last year, we’ve prepared the first edition draft of the Decision-led guidance document which focusses on the investment case phase within the state highways infrastructure project lifecycle.

For more information and to see the draft guidance visit the Decision-led approach page on our website:

Decision-led approach

Consultation feedback 

To further refine the guidance, we collected feedback from those who’ve used the approach. Feedback was guided by the following questions:

  • What have your experiences been using Decision-Led approach in the investment case phase been to date? 
  • How can we further refine the decision-led approach?  
  • Are there any key project workstream decisions that are missing? 
  • What are these and what phase of project development are these at?  
  • What further information would you need to support your role? 

This consultation closed on 16 October 2025.  

Your response and privacy 

The information you sent us by email will be used by NZ Transport Agency Waka Kotahi to help inform our consultation for the Guidance to the decision-led approach to project development. NZ Transport Agency Waka Kotahi may publish in part or in full the information you submit, for example in a consultation report, but we will not include any information that could be used to identify an individual person. If you have indicated you are an authorised representative of an organisation, we may publish your organisation’s name. Please clearly indicate if your comments contain commercially sensitive information or, if for some other reason, they should not be disclosed.  

If you would like to request official information from us, please direct it to the project team so we can respond to it in a timely manner.  

You can find more about how we hold and protect your information, and our obligations under the Official Information Act on our website. 

Consultations - how we protect your information

Note on use of AI in analysing feedback 

To help us analyse the feedback we receive from this consultation, we may use artificial intelligence (AI) tools. These tools can assist us in identifying common themes and summarising responses more efficiently. Any use of AI will follow our privacy and data protection standards, and your feedback will always be reviewed by our team to ensure fair and accurate reporting. 

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