Dear New Zealand Police,

I am a concerned resident of New Zealand and live in the Wellington region.

You have recently announced that the DrugWipe 3S will be used for road-side drug saliva testing, which is being trialled in Wellington this December 2025.

The law and demerit system has clear thresholds for impairment via alcohol, yet does not provide any thresholds for other substances. This makes it impossible to know what the law considers to impair driving, and it is now coupled to how a proprietary testing device behaves.

I believe it is in the public's interest - and I am requesting under the OIA - the purported detection thresholds, sensitivity, accuracy, specificity, false positive and false negative rate for the DrugWipe 3S against each substance it can detect.

This will allow the New Zealand public compare to the recommendations of the Independent Expert Panel published by the Ministry of Transport here: https://www.transport.govt.nz/assets/Upl...

Without this information citizens of New Zealand will be unable to determine exactly how long to wait after using a substance, before it is "safe" to drive according to the law.

Separately, I am also requesting how much each test is costing the tax payer.

Yours faithfully,
Joel Pitt, PhD