2.6. Groupe de pare-brise, un groupe formé des pare-brise de formes et de dimensions différentes soumis à un examen de leurs propriétés mécaniques, de leur mode de fragmentation et de leur comportement lors des essais de résistance aux agressions du milieu ambiant:
2.6. Group of windscreens means a group consisting of windscreens having different shapes and dimensions which are subjected to an examination of their mechanical properties, fragmentation characteristics and their behaviour during tests on their resistance to attack from their environment;