UN Regulations Nos. 49 and 83 include provisions for a “driver inducement system” that alerts drivers of low reagent levels (urea, etc.) critical to correct emissions control performance and eventually prevents vehicle operation if the reagent tank is empty. Under UN R49 (para. 5.2), rescue, police, and other emergency/special use vehicles are exempted from this requirement. This proposal would extend the same treatment under UN R83.

Proposal to correct the calculation of the resistance to progress force. This proposal was amended during GRPE discussions to cover the 06 and 07 series of amendments to UN R83.

Proposal to correct the unit of the road load coefficient b used in the formula for the calculation of the resistance to progress force.

Proposal to correct the unit of the road load coefficient b used in the formula for the calculation of the resistance to progress force.

Proposal to update the on-board diagnostics (OBD) requirements of UN R83 in line with technical progress and to update the reference fuels in the 06 series of amendments in line with changes introduced in the 07 series of amendments to UN R83.

Proposal to update the on-board diagnostics (OBD) requirements, to delete the definition of “vehicles designed to fulfil specific social needs” in line with the Euro 6 stages of European Union Regulation (EC) No. 715/2007 and implementation Regulation (EC) No. 692/2008, and to clarify the wording of transitional provisions and align them with the General Guidelines for UN Regulatory Procedures and Transitional Provisions in UN Regulations (ECE/TRANS/WP.29/1044/Rev.1). In addition, the proposed wording would allow Contracting Parties not to accept UN type-approvals if the requirements specified in the 07 series of amendments are not met.

Proposal to correct the unit of the road load coefficient b used in the formula for the calculation of the resistance to progress force.

Reference prepared by the WP.29 secretariat

The purpose of this proposal is to amend the document GRPE/2015/2 in order to clarify the validity of 06 series of amendment, avoid discrepancies related to the date of entry into force of 07 series of amendment and better clarify the wording of transitional provisions and align them with the General Guidelines for UN Regulatory Procedures and Transitional Provisions in UN Regulations.

European Commission presentation reviewing the issues involved with transposing GTR 15 into EU emissions and fuel consumption regulations and into UN R83 and UN R101. The EC proposes that WP.29 should transpose GTR 15 into a new “WLTP UN Regulation” that would supersede UN R83 and UN R101.