The group had an exchange of view on the proposal from the CLEPA/OICA per AEBS/LDWS-17-02-Rev.1 (see also Annex 1). The main concerns which emerged from the first comments were as follows:

• 1. Warning time lowest value (both moving and stationary scenario)
• 2. Target speed in the moving target scenario

There was a suggestion to divide the work in steps:

• 1. Stationary target, then
• 2. Moving target

Netherlands questioned the kind of speed for row 1 vs. row 2 vehicles (curves of slide 8)

OICA clarified that the data are extrapolated from computers. The expert considered it possible to provide speed data at the next meeting.

The Chair proposed a 2-step approach, using the criteria as proposed by OICA/CLEPA for the 1st step, and to increase these criteria for the 2nd step, i.e. a more ambitious speed reduction value for the subject vehicle in the stationary target test and a lower value for the speed of the target vehicle in the moving target scenario.

Japan supported CLEPA/OICA proposal

France and India had no view to date on the subject

Sweden could support CLEPA/OICA’s proposal.

The 2-step approach was supported by some Contracting Parties.

Netherlands on the one hand had a preference for a 1-step approach but on the other hand did not like immature systems on the road. The delegate finally agreed with a 2-step approach.

Germany considered it possible, when looking the figures, to achieve agreement on a 1-step
approach.

The expert from CLEPA informed that a new, corrected simulation tool was available.

Conclusion:

General support for the 2-step approach, i.e.:

• 1. Collision mitigation in stationary target scenario and collision avoidance in the moving target scenario, based on the values for speed reduction (10 km/h) and target vehicle speed (67 +/- 2 km/h) as proposed by OICA/CLEPA then
• 2. increased value of the speed reduction in the stationary target scenario and collision avoidance in moving target scenario with increased stringency, i.e. a substantially lower value of the target speed.

Secretary to post the revised simulation tool on the UNECE website (done as document AEBS/LDWS-17-03).