Proposal to address the concerns raised in document GRSG-111-35 (which failed to achieve consensus at the last GRSG session) through application of FprEN 16584-1:2015 and 2:2015, respectively referring to requirements for color contrast for signage and quality of audible information.

Swiss report on circumvention of pollution-control systems through the use of aftermarket AdBlue emulators that stop AdBlue injection while preventing detection of the failure by the engine management system.

Information on Swiss detection of significant deactivation of Ad Blue diesel emissions reduction systems on EURO V vehicles (no EURO VI manipulated vehicles have been found to date).

Proposal to delete the proposed amendment to paragraph 6.2.3. of UN R51 which would limit the scope of the additional sound emissions provisions (ASEP) to M₁ and N₁ vehicles equipped with an internal combustion engine operational within the control range of Annex 7. Switzerland submits that the limitation would release manufacturers from responsibility for vehicle sound behavior outside of ASEP in contradiction to the historical interpretation that manufacturers are responsible for ensuring reasonable vehicle sound levels under all conditions, not only within ASEP.