Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p11
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 11/43)
Character Range: 174388–176933

of the glass, nor within a radius of 7.5 cm from the point of impact.
2.6.1.1.4. A maximum of 3 fragments of an area exceeding 3 cm2 shall be allowed. No two of these fragments shall be contained within the same 10 cm diameter circle.
2.6.1.1.5. Elongated fragments may be permitted provided that their ends are not knife-edged and that their length does not exceed 7.5 cm, except in the case provided for in paragraph 2.6.2.2. below. If these elongated fragments extend to the edge of the glass, they shall not form an angle of more than 45° with it.
2.6.1.2 Zone FII:
2.6.1.2.1. The residual visibility after shattering shall be checked in the rectangular area defined in paragraph 2.3.2. above. In that rectangle the aggregate surface area of the fragments of more than 2 cm2 shall represent not less than 15 per cent of the area of the rectangle; however, in the case of windscreens less than 44 cm high, or whose angle of installation is less than 15° from the vertical, the visibility percentage shall at least be equal to 10 per cent of the surface of the corresponding rectangle.
2.6.1.2.2. No fragment shall have an area of more than 16 cm2 except in the case provided for in paragraph 2.6.2.2. below.
2.6.1.2.3. Within a radius of 10 cm from the point of impact, but only in that part of the circle which is included in Zone FII, three fragments having an area of more than 16 cm2 but less than 25 cm2 shall be allowed.
2.6.1.2.4. Fragments shall be substantially regular in shape and free from points of the type described in paragraph 2.6.1.2.4.1. below. However, not more than 10 irregular fragments shall be allowed in any 50 x 20 cm rectangle and not more than 25 over the whole surface of the windscreen.
 No such fragment shall present a point more than 35 mm long measured in accordance with paragraph 2.6.1.2.4.1. below.
2.6.1.2.4.1. A fragment shall be considered as an irregular fragment if it cannot be inscribed in a circle of 40 mm in diameter, if it has at least one point more than 15 mm long when measured from the top of the point to the section whose width is equal to the glazing thickness, and if it has one or more points having a top angle smaller than 40°.
2.6.1.2.5. Fragments of elongated shape shall be allowed in Zone FII as a whole, provided they do not exceed 10 cm in length, except in the case provided for in paragraph 2.6.2.2. below.
2.6.1.3. Zone FIII
 Fragmentation in this zone shall have characteristics intermediate between those of the fragmentation respectively allowed for the two neighbouring