Further to Reply 17201 (2026), by what counting methodology were 331 roadside inspections recorded as covering 620 vehicles, and on average how many vehicle units were covered per inspection?

Answer

NZTA advises me that each roadside inspection is assigned a unique identifier. During the period in question, there were 331 unique roadside inspections relating to this cohort. Across these inspections, a total of 620 vehicle units were inspected (noting that each tractor and trailer unit is recorded as a separate vehicle). The breakdown of inspections by number of vehicles is as follows: • 87 inspections involved a single vehicle • 199 inspections involved two vehicles (398 vehicle units) • 45 inspections involved three vehicles (135 vehicle units) This resulted in an average of 1.873 vehicle units per inspection. For clarity: - A single vehicle is typically a rigid heavy vehicle (which may include a tractor unit without a trailer attached). - Two vehicles typically refer to a tractor unit with one trailer attached. - Three vehicles typically refer to a tractor unit with two trailers attached.