The group was questioned whether including the combinations in the final text.

• I. Resistance to Temperature changes followed by abrasion:
  • a. Report says it is reasonable.
  • b. Informal group experts’ opinion: seems not necessary as no negative experience was ever reported. Should the group decide not to use the Taber test for abrasion, it would have to be excluded as well from the combination.
  • c. Conclusion: combination seems not relevant.

• II. Resistance to Temperature changes as a single test:
  • a. Informal group experts’ opinion: Some experts were of the opinion that the temperature resistance should be included, out of a combination. Side glass experience did not show any failure to this test: seems relevant not to include it. However the regulation addresses any kind of “plastics” hence safety could be ensured thanks to this test because some new materials could need such test
  • b. Conclusion: kept for the moment, subject to revision at next meeting.

• III. 227g Ball drop followed by humidity test
  • a. Report Conclusion: no failure
  • b. Informal group expert opinion: aim was to assess the resistance to humidity after an impact.
  • c. Conclusion: combination seems not relevant

• IV. 227g ball drop followed by “boil” test (high temperature)
  • a. Report Conclusion: no failure
  • b. Comments from the informal group: this test was not mentioned during the 2nd meeting. The number of samples and tests performed is not sufficient to draw a conclusion as providing insufficient data. Height of 8,5 m was debated. The experts acknowledged that this value is a copy/paste from the glass test.
  • c. Conclusion: not enough samples, neither coating or plastics, etc: no conclusion to the combination can be drawn to date. Yet the proposed height of 8,5 can be kept for plastics.

• V. 2,26 kg ball drop test.
  • a. Report Conclusion: no failure detected
  • b. Informal group experts’ opinion: headform test with a 10 kg ball already exists, hence the experts did not find necessary an additional test with a 2,26 kg ball..
  • c. Conclusion: test deleted for the moment, Daimler to communicate a solid position for the next meeting.