Regulation No. 129-01 Proposed Supplement 1

Name:Regulation No. 129-01 Proposed Supplement 1
Description:Approval of Enhanced Child Restraint Systems (ECRS). Proposed Supplement 1 to the 01 Series.
Official Title:Proposal for Supplement 1 to the 01 Series of Amendments to Regulation No.129 (Enhanced Child Restraint Systems (ECRS)).
Country:ECE - United Nations
Date of Issue:2016-09-02
Amendment Level:Original
Number of Pages:8
Vehicle Types:Bus, Car, Component
Subject Categories:Drafts and Proposals (Historical)
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Text Extract:

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Method 2
The applicant shall declare in writing that when testing materials in accordance with
Annex 23 of this Regulation, the materials used shall not burn, nor transmit a flame front
across its surface, at a rate of more than 100mm/min. Each material used in an
enhanced child restraint system shall conform to these requirements. However, the
requirement concerning transmission of a flame front shall not apply to a surface created
by cutting a test specimen for purposes of testing pursuant to Annex 23.
The requirements shall be met in both the "in-use" and in the "stowed" positions of the
built-in Enhanced Child Restraint System.
If a material stops burning before it has burned for 60s from the start of timing, and has
not burned more than 51mm from the point where the timing was started, it shall be
considered to meet the burn-rate requirement specified above.
Tests confirming the validity of the declaration may be carried out at the discretion of the
Technical Service."
Paragraph, amend to read:
" At this static inverted position a mass equivalent to four times that of the dummy, with a
tolerance of -0/+5% with reference to dummies nominal masses as in Annex 8, shall be
applied vertically downwards in a plane perpendicular to the axis of rotation in addition to
the dummy utilizing the load application device described in Annex 21. The load shall be
applied in a gradual controlled manner at a rate not exceeding gravitational acceleration
or 400mm/min. Maintain the prescribed maximum load for a duration of 30 -0/+5s."
Paragraph, amend to read:
" The deceleration of the trolley shall be achieved by using the apparatus prescribed in
Annex 6 to this Regulation or any other device giving equivalent results. This apparatus
shall be capable of the performance specified in Paragraph and hereafter
For frontal impact, the trolley shall be so propelled that, at the beginning of the test, its
velocity is 50 +0/-2km/h and its acceleration curve is within the hatched area of the graph
in Annex 7, Appendix 1.
For rear impact, the trolley shall be so propelled that, at the beginning of the test, its
velocity is 30 +2/-0km/h and its acceleration curve is within the hatched area of the graph
in Annex 7, Appendix 2.
Tests performed at a higher speed and/or with an acceleration that exceeds the upper
boundary of the hatched area shall be considered satisfactory if the child restraint
system meets the performance requirements for the test.
Tests performed at a lower acceleration shall be considered satisfactory only if the
acceleration curve crosses the lower boundary of the hatched area for a cumulative
period of up to 3ms.
In fulfilling the above requirements, the Technical Service shall use a mass of trolley
(equipped with its seat), as specified in Paragraph 1 of Annex 6, greater than 380kg."

Annex 21, amend to read:

Load Application Device II

3.1. The test is conducted in a metal cabinet for protecting the test specimens from drafts. The
interior of the cabinet is 381mm long, 203mm deep, and 356mm high. It has a glass
observation window in the front, a closable opening to permit insertion of the specimen holder,
and a hole to accommodate tubing for a gas burner. For ventilation, it has a 13mm clearance
space around the top of the cabinet, ten holes in the base of the cabinet, each hole 19mm in
diameter and legs to elevate the bottom of the cabinet by 10mm, all located as shown in
Figure 2.
3.2. Prior to testing, each specimen is conditioned for 24h at a temperature of 21°C, and a relative
humidity of 50%, and the test is conducted under those ambient conditions.
3.3. The test specimen is inserted between two matching U-shaped frames of metal stock 25mm
wide and 10mm high.
The interior dimensions of the U-shaped frames are 51mm wide by 330mm long.
A specimen that softens and bends at the flaming end so as to cause erratic burning is kept
horizontal by supports consisting of thin, heat-resistant wires, spanning the width of the
U-shaped frame under the specimen at 25mm intervals.
A device that may be used for supporting this type of material is an additional U-shaped frame,
wider than the U-shaped frame containing the specimen, spanned by 10mil wires of
heat-resistant composition at 25mm intervals, inserted over the bottom U-shaped frame.
3.4. A bunsen burner with a tube of 10mm inside diameter is used.
The gas adjusting valve is set to provide a flame, with the tube vertical, of 38mm in height. The
air inlet to the burner is closed.
3.5. The gas supplied to the burner has a flame temperature equivalent to that of natural gas.
4.1. Each specimen of material to be tested shall be a rectangle 102mm wide by 356mm long,
wherever possible.
The thickness of the specimen is that of the single or composite material used in the vehicle,
except that if the material's thickness exceeds 13mm, the specimen is cut down to that
thickness measured from the surface of the specimen closest to the occupant compartment air
Where it is not possible to obtain a flat specimen because of surface curvature, the specimen is
cut to not more than 13mm in thickness at any point.
The maximum available length or width of a specimen is used where either dimension is less
than 356mm or 102mm.
4.2. The specimen is produced by cutting the material in longitudinal as well as transvers direction.
The specimen is oriented so that the surface closest to the occupant compartment air space
faces downward on the test frame.
4.3. Material with a napped or tufted surface is placed on a flat surface and combed twice against
the nap with a comb having seven to eight smooth, rounded teeth per 25mm.

Approval of Enhanced Child Restraint Systems (ECRS). Proposed Supplement 1 to the 01 Series.