Presentation on the European Commission’s intentions for reducing CO2 emissions from heavy-duty vehicles.

Presentation from the International Council on Clean Technology reviewing various test methods in use for heavy-duty hybrids and evaluating opportunities for harmonization.

Presentation on testing of heavy-duty hybrid vehicles on a chassis dynamometer.

Progress report and overview of the effort to develop a heavy-duty hybrid vehicle emissions test procedure based on hardware-in-the-loop simulations.

Progress report of the working group developing the emissions and CO2 test procedure for heavy-duty hybrid vehicles.

Comments and recommendations concerning the ‘extended HILS’ approach and application of the current worldwide heavy-duty vehicle emissions test cycle to hybrid vehicles.

Presentation on US EPA hybrid-engine powerpack testing, future challenges, and comparison with GTR program.

Review of the current status of work and forward plans.

Presentation of a proposal for a revised ‘Worldwide heavy-duty hybrid test cycle’.

The Vienna and Graz Technical Universities have conducted research and offered recommendations for the heavy-duty hybrid emissions regulation. Japan comments on the TU-Wien and TU-Graz proposals.

TU-Wien presentation on its work with IFA on the assessment of HILS methodology and suggestions for the GTR validation test program.

Report of the informal group session held in Tokyo during March 2012. This group is working to add provisions for heavy-duty hybrid vehicles to GTR No. 4 (WHDC).

Investigation into various methods in use for evaluating heavy-duty hybrid emissions and CO2 performance.