Notification of the first meeting to work on refinements to the GTR on light vehicle emissions that will likely be voted on at the World Forum session next March. This new phase of work (“phase 1b”) expects to produce an amendment to the GTR that will address technical elements set aside in the interests of meeting participant deadlines for establishing the basic test cycles.

Presentation prepared by the WLTP secretary for discussion at the 5th informal working group session.

Brief review of open issues concerning electric vehicle testing for resolution during “Phase 1b” of the development of the light-duty vehicle emissions GTR (WLTP).

Review of main test procedures and flowchart towards determining pass/fails.

Review of the European validation program to assess the repeatability of the test procedure described in the Phase 1a GTR text.

Plan for the Asian validation program to assess the repeatability of the WLTP test procedure as part of its phase 1b development.

Heinz Stephen presentation on the technical report on the development of the harmonized driving cycle used in the global technical regulation on light-duty vehicle emissions (WLTP).

Heinz Stephen presentation on the technical report on the development of the test procedures used in the global technical regulation on light-duty vehicle emissions (WLTP).

Heinz Stephen proposals for addressing selected technical issues remaining to be resolved through the supplemental phase (“phase 1B”) for the refinement of the global technical regulation on light-duty vehicle emissions.

Progress report on test validation and refinement efforts from the Technical University of Graz (concerning the chassis dynamometer test) and TNO (concerning the road load/coast down test)

Proposal of a test to reflect the CO2 values obtained under “real life temperature conditions”.

Progress report of the WLTP “Additional Pollutants” expert subgroup.