#17: Default road load parameters:
Explanation of hybrid approach (incl. extension of scope) was given by NL (WLTP-08-26e). Approach is necessary especially for multi-stage vehicles (MSV) and can be used as an option to full measurement or application of default road load values. WLTP IWG welcomed the initial proposal and requested to develop it further in the RLD TF. JPN had concerns to extend the scope of application to other vehicles than MSV, e.g. N1.. Based on the statements from other Contracting Parties, e.g. Germany / NL, it was agreed by WLTP IWG that the RLD TF should further investigate the possibility of scope extension. India requested that default road load values shall be based on real data. WLTP IWG asks RLD TF for clarification of validation needs and further steps for reporting in IWG meeting #9.

ACEA welcomed the NL proposal and gave a feedback (WLTP-08-27e). Additional coast down data and comparison to the adjusted default values are expected to be delivered by ACEA to RLD TF. The separate proposal to adapt the factor of “F0” in the current gtr formula should be further discussed in the RLD TF. ACEA also offered to provide a document which describes the EU concept of MSV as background information for other Contracting Parties. WLTP IWG agreed to postpone final discussion on default parameters to IWG meeting #10.