Progress report of the informal group to the Working Party on Pollution and Energy (GRPE).

Draft version of the first-phase regulation on retrofit emissions control devices pending finalization before submission to the Working Party on Pollution and Energy.

Working draft of the phase-two text (i.e., Amendment 1) of the proposed regulation on retrofit emissions control devices.

REC regulation project schedule envisioning submission of the final version of the base regulation at the November 2013 WP.29 session and submission of the second-phase Amendment 1 at the March 2014 session.

E-mail (Outlook .msg format) to the REC secretariat conveying the outcomes of a CLEPA/OICA agreement on a amendments to the draft of the proposed REC regulation.

Presentation comparing performance results of retrofit diesel particulate filters under the European Test Cycle and Worldwide Harmonized Test Cycle.

Draft of the proposed regulation pursuant to the 14th REC informal group session of 19-20 February 2013.

Marked-up version of the draft regulation pursuant to the REC informal group session of 19-20 February 2013.

Draft of the amendments pursuant to the REC informal group session of 19-20 February 2013. The amendment is being developed in parallel to the proposed REC regulation and would introduce a second phase of requirements.

Working draft of the proposed new UN Regulation on retrofit emissions control devices pursuant to the February session of the informal group of experts.

Clean copy of the draft UN Regulation on retrofit emissions control devices pursuant to the February session of the informal group of experts.

Project schedule for development of the new regulation on retrofit emissions control devices.

Explanatory charts for the draft new regulation on retrofit emissions control devices.

Draft text of the planned ‘phase 2’ amendment to the new regulation on retrofit emissions control devices presently in its final steps towards adoption.

Planned schedule for reaching approval of the new UN Regulation on retrofit emissions control devices and its second phase amendment.

Discussion items for the 16th REC session concerning stringency requirements and safeguards against reversing particulate filters.

Discussion of trade-offs between PM reduction and NO2 limits in retrofit emission control devices.

Correction to document GRPE/2013/6 as approved by the REC informal group to align the second warning and inducement in Annex 10 with the first warning and inducement.

Swiss study on heavy duty vehicles with NOx reduction systems (SCR or DPF+SCR systems) towards defining a simplified test procedure for measuring emissions, including prospects for applying such testing to retrofit emissions control systems.