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Retention systems shall be protected from abrasion. 6.11. The helmet shall be held in place on the wearer's head by means of a retention system which is secured under the lower jaw. (...) The luminous transmittance shall be measured before the abrasion test. Figure 2: Symbol "Daytime use only" E/ECE/324 Rev.1/Add.21/Rev.4 E/ECE/TRANS/505 Regulation No. 22 page 18 6.15.3.5. (...) The spectral transmittance shall be measured before the abrasion test. 6.15.3.8. The table contains the permissible refractive powers at the sight points.

Cross cut test The purpose of this test is to examine whether any abrasive resistant coating of a rigid plastic glazing has sufficient adherence." (...) Test Trailers and Trailers and Flexible Plastics Other Than Windscreens Rigid Plastics Double Glazing Motorised Unoccupied Motorised Unoccupied Plastics Vehicles Vehicles Vehicles Vehicles Flexibility A3/12 A3/12 A3/12 A3/12 A3/12 227 g ball A14/5 A14/5 A16/5 A16/5 A15/4 Headform 1/ A14/4 – A16/4 – – Light transmission A3/9.1 – A3/9.1 – A3/9.1 Fire Resistance A3/10 A3/10 A3/10 A3/10 A3/10 Chemical Resistance A3/11 A3/11 A3/11 A3/11 A3/11 Abrasion A14/6.1 – A16/6.1 – – Weathering A3/6.4 A3/6.4 A3/6.4 A3/6.4 A3/6.4 Humidity A14/6.4 A14/6.4 A16/6.4 A16/6.4 – Cross-Cut 2/ A3/13 – A3/13 - - 1/ Test requirements are dependant on the location of the glazing within the vehicle. 2/ Applies only if the glazing is to be used in a location requisite for driving visibility. 8.2.2. (...) Measure, according to paragraph 4 of this annex, the resistance to abrasion of the surface(s) of the control specimen(s).

The glazing material shall be sufficiently resistant to the incidents likely to occur in normal traffic, and to atmospheric and temperature conditions, chemical action, combustion and abrasion. 6.2. Safety glazing materials shall in addition be sufficiently transparent, shall not cause any noticeable distortions of objects as seen through the windscreen, and shall not give rise to any confusion between the colours used in road- traffic signs and signals. (...) Test of resistance to abrasion The purpose of this test is to determine whether the resistance of a safety glazing to abrasion exceeds a specified value. (...) Cross cut test The purpose of this test is to examine whether any abrasive resistant coating of a rigid plastic glazing has sufficient adherence. 8.1.4.

The approval number indicates that the approval was granted in accordance with the requirements of Regulation No. 43 in its original form. The pane has been abrasion tested so that the outer surface meets the 2 per cent light scatter/1000 cycle requirement and the inner surface meets the 4 per cent light scatter/100 cycle requirement.” (...) In the case of glazing of the class L, the abrasion test shall be considered to have given a satisfactory result if the total light scatter after abrasion does not exceed 2 per cent after 1000 cycles on the outer surface of the test sample and 4 per cent after 100 cycles on the inner surface of the test sample." 6.1.3.2. In the case of glazing of the class M, the abrasion test shall be considered to have given a satisfactory result if the total light scatter after abrasion does not exceed 10 per cent after 500 cycles on the outer surface of the test sample and 4 per cent after 100 cycles on the inner surface of the test sample.”

Test of resistance to abrasion in accordance with the requirements of Annex 9, paragraph 2. 2.6.2. (...) Test of resistance to abrasion The purpose of this test is to determine whether the resistance of a safety glazing to abrasion exceeds a specified value. 6.1.3.2. (...) Abrasive wheels 3/, each 45 to 50 mm in diameter and 12.5 mm thick, composed of a special finely-screened abrasive embedded in a medium hard rubber.

., to read: "6.1.3.3. For sun roofs, the abrasion test is not required." Annex 16, Insert new paragraph 6.1.3.3., to read: "6.1.3.3. For sun roofs, the abrasion test is not required." Annex 21, Paragraph 4.2.2.2., to be put in square brackets to indicate a need for further consideration. (...) Therefore, such glazing can be exempted from the abrasion resistance requirement in the same way as in document TRANS/WP.29/GRSG/1999/12.