Dr. Matthai presented the state of play of subgroup 1.

The 3rd car currently tested would long more than 1 year for having 1 winter real world experience [The 3rd car is currently under testing that would last more than one year in order to provide one winter of real world experience]. However this would bring the results in after the deadline of the informal group. This is the reason why VW is looking to another test method than the current delta haze, i.e. STRAYLIZER.

There was a question about the possible comparison of the STRAYLIZER compared to the delta haze in the case of the Taber test.

VW recommended inviting STRAYLIZER to explain the principle of the measurement.

The results may be different according to the orientation of the STRAYLIZER compared to the direction of the scratches.

Sabic proposed to measure some samples out of the RR and the subgroup 2, in order to compare the STRAYLIZER with the usual delta haze measurement.

Dr Matthai explained that only 3 windshields, one backlight and one lab windshield could be monitored because no manufacturer could provide a further vehicle. Hence the test campaign will be finished at the end of these tests.

The Chair recalled that the origin of the STRAYLIZER is coming from the measurement of the light transmission. The apparatus can measure the quality of the sample surface.