ISO 3929:1995

Road vehicles — Measurement methods for exhaust gas emissions produced during inspection or maintenance

Establishes the test procedures for direct measurement of the concentration of exhaust gas emissions from road vehicles with a maximum authorized total mass not exceeding 3,5 t, equipped with controlled ignition engines, excluding those which are supplied with fuel/oil mixture. Defines the recommended test procedure for periodic inspections in official garages, official roadside checks (e.g. by police), maintenance and diagnostic operations. These procedures may be used totally or partially.