The NZ Transport Agency conducts post-implementation reviews every year on a small sample of completed projects or packages that it has invested in.
The reviews are not drawn from a statistically significant sample of all completed projects, but they do allow the Transport Agency to compare the planned benefits and costs of a project with the actual outcomes achieved.
The Transport Agency Board approved the post-implementation review policy for evaluating outcomes of agency investments in July 2013. The policy is designed to promote the transparency of the review findings, improve the evaluation of expected benefits and identification of lessons learned.
The Transport Agency uses an appropriate monitoring and auditing framework across funded activities in the National Land Transport Programme (NLTP). Post-implementation reviews are part of this framework.
Their scope is on reviewing improvement projects and packages from within the following NLTP activity classes:
Post-implementation reviews aim to:
In order to ensure outcomes are clear, approved organisations are required to nominate performance measures and targets for all projects and packages with an approved cost of $10 million or more as a condition of funding. The Transport Agency may also require performance measures on some lower value activities (for example, where there is a strategic link or innovation identified).
A sample of completed projects is selected for post-implementation reviews each year using a stratified sampling approach. The range of factors considered in selecting completed activities to review include:
The following processes are used to promote lessons learned from post-implementation reviews: