Document ID: chunk:federal_register_of_legislation:F2015C00542:front:0:p8
Version: federal_register_of_legislation:F2015C00542
Segment Type: other
Provision Reference: 
Character Range: 23660–26453

pane" means a pane with a height of segment equal to or less than 10 mm per linear meter.
2.18. "Height of segment 'h' " means the maximum distance, measured at right angles approximately to the glazing, separating the inner surface of the glazing from a plane passing through the ends of the glazing (see Annex 17, Figure 1).
2.19. "Type of safety glazing material" means a glazing as defined in paragraphs 2.1. to 2.7. not exhibiting any essential differences, with respect, in particular, to the principal and secondary characteristics defined in Annexes 4 to 12 and 14 to 16;
2.19.1. Although a change in the principal characteristics implies that the product is of a new type, it is recognised that in certain cases a change in shape and dimension does not necessarily require a complete set of tests to be carried out. For certain of the tests prescribed in the individual annexes, glazings may be grouped if it is evident that they have similar principal characteristics;
2.19.2. Types of glazing exhibiting differences only as regards their secondary characteristics may be deemed to be of the same type. Certain tests may however be carried out on samples of such glazings if the performance of those tests is explicitly stipulated in the test condition;
2.20. "Nominal thickness": means the manufacturer's design thickness with a tolerance of ± (n x 0.2 mm) where n equals the number of glass layers in the glazing.
2.21. "Curvature 'r' " means the approximate value of the smallest radius of arc of the windscreen as measured in the most curved area.
2.22. "HIC (Head Injury Criteria)" value means a value for the characteristics of skull-brain injury arising from the deceleration forces which result from a blunt perpendicular impact with the glazing.
2.23. "Safety glazing material requisite for driver visibility"
2.23.1. "Safety glazing material requisite for the driver's forward field of vision" means all the glazing situated in front of a plane passing through the driver's R point and perpendicular to the longitudinal median plane of the vehicle through which the driver can view the road when driving or manoeuvring the vehicle.
2.23.2.  "Safety glazing material requisite for the driver's rearward field of vision" means all glazing situated behind a plane passing through the driver's R point and perpendicular to the longitudinal median plane of the vehicle through which the driver can view the road when driving or manoeuvring the vehicle.
2.24. "Opaque obscuration" means any area of the glazing preventing light transmission, including any screen-printed area, whether solid or dot-printed, but excluding any shade band.
2.25. "Shade band" means any area of the glazing with a reduced light transmittance, excluding any opaque obscuration.
2.26. "Transparent area