CLEPA presentation of the results of its noise-emission tests on seven vehicles comparing original equipment and replacement (aftermarket) silencing systems (mufflers) under the “Additional Sound Emissions Provisions” test procedure.

Table prepared by OICA highlighting various elements in the consideration of noise in UN Regulation Nos. 9, 28, 41, 51, 59, 63, 92, and 117.

CLEPA presentation on additional sound emission provisions for replacement silencing systems.

Table showing the status of the revisions to selected UN Regulations, including the new UN R127 (LED lighting) and R128 (Pedestrian safety). Revisions consolidate and update regulations as a single text.