Working draft (pursuant to the third informal working group session of 6 May 2014) of proposed amendments to UN R51, based on the consolidated version of the regulation through the 02 series of amendments, in order to align its provisions with the latest EU noise requirements.

Working draft (pursuant to the third session of the Informal Working Group on UN Regulations Nos. 51 and 59) of the 02 series of amendments to UN R59 intended to align its provisions with the latest EU sound level requirements.

Prepared as an informal document for the 60th Working Party on Noise (GRB) session for discussion by the R51/59 informal working group at its 4th session.

Proposal to introduce a “Deceleration Calculator” (dω/dt) for use in the UN R117 test procedures. This procedure was developed by Russia and validated by an ad hoc group (including NAMI, UTAC, and ETRTO).

Consolidated version of UN Regulation No. 59 incorporating the revisions recommended by the Informal Working Group on UN Regulations Nos. 51 and 59 in order to align the UN R59 with the latest EU decisions.

At the 58th GRB session, the expert from ETRTO introduced GRB-58-02, proposing new time measurement accuracy for instrumentation involved in the rolling resistance method (Annex 6 of the UN Regulation). The expert from the Russian Federation introduced GRB-58-13, arguing that this change of accuracy was not needed for Annex 6. This present revised proposal has been prepared the ETRTO and approved by Russia.

The current UN R28 test procedures specify voltages that cannot be reached by many vehicles’ internal battery charges alone; however, the provisions can be met if the vehicle is warmed up and run at idle. Therefore, OICA proposes to allow vehicles to be run at idle during the test procedure. OICA also proposes to change the minimum sound level requirement for vehicles of category M and N and motorcycles of a power greater than 7 kW from 93 dB to 87 dB.

Proposal from the expert group on UN R51 and UN R59 to update the provisions of UN Regulation No. 51.

Proposed changes from the ETRTO to clarify the communication form in Annex 1.

“Quick scan” study prepared for the Dutch Ministry of Infrastructure and Environment to evaluate the potential of “triple A” tyres to improve vehicle safety, noise emssions, fuel consumption, and CO2 emissions. Tyres in the EU are labeled to convey information on their energy efficiency, safety, and noise performance. Triple A refers to tyres receiving the highest ratings across these three criteria.

This leaflet gives a short introduction for those who wants to explore the benefits and common pitfalls of silent road surfaces in urban situations.

Proposal from the informal working group on Un Regulations Nos. 51 and 59 for further amendments to the draft 03 series of amendments to UN R51 (document GRB/2014/5).

This proposal would correct the reference to the latest version of ISO 10844 and introduce transitional provisions for shift of the test track from ISO 10844:1994 to ISO 10844:2011.

Proposal to clarify certain terms and symbols used in Annex 7 (ASEP) of the regulation.

Memorandum to the Netherlands Ministry of Infrastructure and the Environment in response to its request for research into

• the effect of the present tyre Regulations on the exterior noise levels of tyres
• comparison of the tyre noise levels in the present distribution with the limit values defined in the tyre Regulations
• definition of the levels of “present-day technology and ambitious technology on base of the distribution of levels found in the present tyre population”.