UN R22 Supplement 3 (06 series) · UNECE Regulation No. 22 (ECE R22) — Uniform provisions concerning the approval of protective helmets, of their visors and of their accessories for drivers and passengers of motorcycles and mopeds.
UN R22 — Supplement 3 to the 06 series of amendments
Supplement 2 → 3
- What changed
- Annex 20 now defines a rigid speaker simulator in two sizes: 40 mm and 45 mm in diameter.
- The “S” (40 mm) and “S45” (45 mm) markings now apply to helmets tested with rigid or deformable speaker simulators, as defined in Annex 20.
- New item 14.1. of the Annex 1A communication form asks, “If S40 or S45”, whether the speaker dummy for the homologation test was deformable or rigid.
- Why
- Materials to make deformable simulators as specified, with certified characteristics, are difficult to find.
- A rigid plastic simulator has known characteristics, is easy to make and is cheaper in relation to the overall cost of the tests.
- A rigid simulator guarantees similar or, in some cases, slightly more conservative results than a deformable simulator.
Q1What changed18 changes
Marking symbols for speakers and microphone (para. 5.1.4.1.2.3.1.)
The “S” marking now applies to a helmet tested with rigid or deformable speaker simulators of 40 mm diameter, as defined in Annex 20. The “S45” marking applies to the same test with simulators of 45 mm diameter. Before, the text said only “speaker simulators” and did not refer to Annex 20. The “M” marking now applies to a helmet tested with a microphone simulator, rigid or deformable.
Rigid speaker simulator (Annex 20, paras. 1.4.2. to 1.4.2.1.2.)
New paragraph 1.4.2. of Annex 20 defines a rigid speaker simulator. Paragraph 1.4.2.1.1. gives a diameter of 40 mm, and paragraph 1.4.2.1.2. gives a diameter of 45 mm. For both sizes, the tolerance is +0-1 mm and the thickness is 8 mm ± 0.07 mm. The material is rigid plastic PA 6 Nylon 6. Annex 20 also defines a deformable speaker simulator. Former paragraph 1.4.2. of Annex 20 is now paragraph 1.4.3.
Speaker dummy in the communication form (Annex 1A, item 14.1.)
The communication form in Annex 1A has a new item 14.1. The item applies “If S40 or S45” and asks for the speaker dummy used for the homologation test. The choice is “deformable/rigid”, and its footnote says “Strike out what does not apply”.
Q2Why it changed
- Proposed by
- Expert from Italy
- Working party
- GRSP, 74th session (December 2023)
Reasons
Reasons given by the proposer: Expert from Italy, in informal document GRSP-74-04-Rev.1. GRSP adopted a text based on GRSP-74-04-Rev.1 at its 74th session and sent it to WP.29 and AC.1 (ECE/TRANS/WP.29/GRSP/74, para. 50).
Materials to make deformable simulators as specified, with certified characteristics, are difficult to find.
Source
“In consideration of the difficulty in finding materials to create deformable simulators as specified in standard and with certified characteristics”
As an alternative, the proposer suggests a rigid plastic simulator. It has known characteristics, is easy to make and is cheaper in relation to the overall cost of the tests.
Source
“we propose as an alternative the solution of a rigid plastic simulator with known characteristics, ease of construction and cheaper in relation to the overall cost of the tests.”
A rigid simulator guarantees similar or, in some cases, slightly more conservative results than a deformable simulator.
Source
“The solution with a rigid simulator guarantees similar or in some cases slightly more conservative results than the solution with a deformable simulator.”
The full test and verification of this alternative was shown in sessions of the Ad Hoc Group and reported to GRSP in the past.
Source
“The entire test and verification of this alternative solution had been illustrated in the various sessions of the Ad Hoc Group and reported in the past also in the presentation report to this GRSP”
Document trail
- —ProposalGRSP-74-04-Rev.1Proposal by the expert from Italy
- —Working party adoptsECE/TRANS/WP.29/GRSP/74Session report, para. 50
- 2024-04Sent to WP.29ECE/TRANS/WP.29/2024/42Text that GRSP adopted and sent to WP.29 and AC.1
- 2024-06-26WP.29 adoptsECE/TRANS/WP.29/1179Adopted at the 193rd session (session report, para. 162)
- 2025-01-10In forceC.N.35.2025.TREATIES-XI.B.16.22UN depositary notification
Q3Who is affected
Vehicle manufacturer
- No direct action for this role.
Component supplier
- Compare your “S”, “S45” and “M” marking and test documents with the new text: simulators can be rigid or deformable.
- Update references to former paragraph 1.4.2. of Annex 20 to the new number 1.4.3.
Technical service / Approval authority
- For “S” (40 mm) and “S45” (45 mm) tests, use rigid or deformable speaker simulators as defined in Annex 20.
- Make sure that a rigid speaker simulator meets the dimensions and material in Annex 20, paragraph 1.4.2.1.1. or 1.4.2.1.2.
- For S40 or S45, strike out “deformable” or “rigid” in item 14.1. of Annex 1A, whichever does not apply.
- Update test procedures that refer to former paragraph 1.4.2. of Annex 20. It is now paragraph 1.4.3.
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ⓘ This report gives advice only. It is not legal or type-approval advice.