Revision 4 | Amendment 2 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2018/38. This document incorporates the following change:

Proposal to modify the frequency of conformity of production inspections and random sampling and to prohibit the use of the DETA program Unique Identifier in place of the approval mark specified in UN R22 because the current mark provides important consumer information that would be lost through use of the UI. This latter prohibition has similarly been approved for child restraint systems (UN R44 and R129).

Revision 4 | Amendment 3 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2020/60. This document incorporates the following change:

Consolidated update of UN R22 from the informal working group on protective helmets, including:

• Reference headforms (shape, dimensions)
• Oblique impact test method of measuring rotational acceleration
• Product of the spectral distribution of radiation of the signal light and standard illuminant D65
• High speed particle test for visors, and
• Test for photochromic, liquid crystal visors.

Revision 4 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following changes:

Revision 4 | Amendment 1 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change: