Standardization of vehicle noise measurement procedures is an important instrument for achieving comparable and reproducible measurement results and therefore to provide means for minimizing traffic noise in the long run. In the International Organization for Standardization Technical Committee ISO/TC 43 ‘‘Acoustics’’ and other ISO/TCs many standards about noise emission measurements on all kinds of vehicles including aircraft, and about tire/road noise effects and road surface characteristics are currently under preparation in several working groups. Some standards are under revision to bring them in line with the advances in vehicle technology, other standards are prepared due to the needs from vehicle manufacturers and environmental protection representatives. The lecture presents ongoing developments in important projects and emphasizes their joint aspects and differences. Examples: (i) Revision of ISO 362 about noise measurement on accelerating cars and motorcycles which is important for type testing. (ii) Project about measurement of tire noise. (iii) Project about the influence of road surfaces on traffic noise to facilitate acoustical characterization of road surfaces (ISO 11819 series). (iv) Revision of ISO 3891 about aircraft noise. (v) Projects about noise emission measurements on vessels (revision of ISO 2922) and small recreational craft (new ISO 14509). (vi) Revision of ISO 3095 about noise emission of railbound vehicles.