"stopnja kakovosti registra" pomeni vrednost spremenljivke, pri kateri je denominator število vzorčnih enot, katerim so bili poslani statistični vprašalniki, z odbitkom skupnega števila enot, ki so zavrnile sodelovanje in števila enot, za katere ni bilo pridobljenih nikakršnih podatkov, in pri kateri je numerator število vzorčnih enot, v katerih so vozila aktivno delovala med obdobjem statističnega pregleda, s pribitkom števila enot, v katerih vozila niso aktivno delovala med obdobjem statističnega pregleda, vendar pa jih je mogoče šteti za del aktivnega voznega parka.
"register quality rate" means a value, of which the denominator is the number of sample units to which questionnaires were despatched, minus the aggregate of the number of units refusing to participate and the number of units for which no information of any kind was received, and of which the numerator is the number of sample units where vehicles were working actively during the survey period, plus the number of units where vehicles were not working during the survey period but could be considered to be part of the active stock of vehicles.