The NZ Transport Agency engages in integrated transport planning at national, regional and local levels in partnership with local government, other central government organisations and the private sector to maximise transport investment outcomes across the network. By working with transport decision makers early in the strategy-setting and planning processes, we have the best opportunity to negotiate investment proposals that achieve quantifiable outcomes and are based on sound assumptions.
Early involvement with transport decision makers also means that we are well placed to provide partners with early certainty of our investment intentions. This gives them assurance to progress their programmes without concern that they will be declined late in the process when much time and effort has already been expended.
The key purpose of NZ Transport Agency's Transport model development guidelines is to provide guidance for the comparisons carried out between observed and modelled outputs, commonly during the base model development phase of a project.
It identifies the requirements for transportation models that are used or funded by the NZ Transport Agency. It describes the standards for calibration and validation that are aspired to for models. It outlines the Agency approach to model development and applies to all classes of transportation and traffic models, with particular reference to project models for state highway projects.
When putting together your business case, there are technical requirements that may be relevant to your project that will need to be considered and included.
To ensure you are completing all steps correctly when you are building your business case, follow the tables below.
You will notice that more is required as you get deeper into the business case process. Not all of these steps are relevant for all business cases but it will give you a good overview of what you may need to consider.
These tables outline what these requirements are and where you can go to find the relevant information.
| Business case phase | Technical requirements | Information |
| Strategic case | Demonstrate problems/opportunities of economic costs | Economic evaluation manual |
| Programme business case | Coarse assessment of options and alternatives in programmes similar to BCR or generic rates | Economic evaluation manual |
| Indicative business case | As per tables 8.1 to 8.3 of the IBC template, show indicative benefits and BCR of options | Economic evaluation manual |
| Detailed business case | Economic viability tables 8.1 and 8.2 of DBC template - detailed benefits and BCR of options | Economic evaluation manual |
| Outcome delivery - detailed benefits by benefit type | ||
| Risk analysis table 8.3 of the DBC template - sensitivity testing | ||
| Pre-implementation | Economic viability tables - detailed benefits / benefit cost ratios of options | Economic evaluation manual |
| Outcome delivery - detailed benefits by benefit type | ||
| Risk analysis table 8.3 of the DBC template - sensitivity testing | ||
| Implementation | Economic viability tables - detailed benefits / benefit cost ratios of options | Economic evaluation manual |
| Outcome delivery - detailed benefits by benefit type | ||
| Risk analysis table 8.3 of the DBC template - sensitivity testing |
| Business case phase | Technical requirements | Information |
| Indicative business case | Indicative assessment of activities and benefits | Transport model development guidance |
| Detailed business case | Economic viability - detailed benefits | Transport model development guidance |
| Pre-implementation | Economic viability - detailed benefits | Transport model development guidance |
| Implementation | Economic viability - detailed benefits | Transport model development guidance |
For further information contact tmd@nzta.govt.nz.
