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

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

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

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.

Presentation on the use of “sailing” technologies to reduce CO₂ emissions and raising a question over the ability of the WLTP test cycle to account for the effect of sailing on vehicle emissions and fuel consumption performance. Sailing involves the decoupling of the engine from the drive shaft, enabling hybrid vehicles to cruise (or “sail”) on battery power alone until such time as the engine needs to be restarted to generate electricity and/or resume the torque functions.

Table of items for resolution in phase 1b in the development of the light vehicle emissions and fuel consumption global technical regulation.

Letter raising concerns regarding misinterpretation of the definition of a hybrid electric vehicle and resultant misapplication of approval requirements.

Study on applicability of driving index (defined in SAE J2951) to WLTP test cycle.

Supplemental Test for determination of CO2 emissions under representative regional conditions

WLTP drafting committee working document with corrections to the text of GTR No. 15.