31 Aug 2017 Problems with noise emissions of L-category vehicles (Germany) GRB-66-12 2017-08-31 Discussion of motorcycle and related vehicle noise issues, especially related to aftermarket modification (non-original replacement exhaust silencer systems (NORESS)). Germany
5 Sep 2017 Possibility of “Pass-by-Light” Noise-measurement of vehicles of Category L (Germany) GRB-66-17 2017-09-05 German authorities have carried out a study to assess the possibility for measuring UN R41.04-approved L category vehicles using typical "roadside check" equipment. The study found that such equipment provides a "lite" version of the UN 41.04 procedures that is useful in evaluating real-world performance. Germany intends to pursue a national "pass-by lite" test directive for UN R41-approved motorbikes and for non-original replacement exhaust silencer systems (NORESS) roadside and periodic technical inspections. Germany