Regulation 16.08 Consolidated to Supplement 3 Part 6
7.5.5.
Buckles having parts common to two safety-belts shall be loaded in such a way as to simulate the conditions of use in the vehicle with seats in the mid position of their adjustment. A load of 1,470 daN shall be applied simultaneously to each strap. The direction of the application of load shall be established according to paragraph 7.7.1. below. A suitable device for the test is shown in Annex 10 to this Regulation.
7.5.6.
When testing a manually adjusting device, the strap shall be drawn steadily through the adjusting device, having regard for the normal conditions of use, at a rate of approximately 100 mm/s and the maximum force measured to the nearest 0.1 daN after the first 25 mm of strap movement. The test shall be carried out in both directions of strap travel through the device, the strap being cycled 10 times prior to the measurement.
7.6.
Additional tests for safety-belts with retractors
7.6.1.
DURABILITY OF RETRACTOR MECHANISM
7.6.1.1.
The strap shall be withdrawn and allowed to retract for the required number of cycles at a rate of not more than 30 cycles per minute. In the case of emergency locking retractors, a snatch to lock the retractor shall be introduced at each fifth cycle.
The snatches shall occur in equal numbers at each of five different extractions, namely, 90, 80, 75, 70 and 65 per cent of the total length of the strap remaining wound on the retractor. However, where more than 900 mm is provided the above percentages shall be related to the final 900 mm of strap which can be withdrawn from the retractor.
7.6.1.2.
A suitable apparatus for the tests specified in paragraph 7.6.1.1. above is shown in Annex 3 to this Regulation.
7.6.2.
LOCKING OF EMERGENCY LOCKING RETRACTORS
7.6.2.1.
The retractor shall be tested once for locking when the strap has been unwound to full length less 300 ± 3 mm.
7.6.2.1.1. In the case of a retractor actuated by strap movement, the extraction shall be in the direction in which it normally occurs when the retractor is installed in a vehicle.
7.6.2.1.2. When retractors are being tested for sensitivity to vehicle deceleration they shall be tested at the above extraction along two perpendicular axes, which are horizontal if the retractor is installed in a vehicle as specified by the safety-belt manufacturer. When this position is not specified, the testing authority shall consult the safety-belt manufacturer. One of these axes shall be in the direction chosen by the Technical Service conducting the approval test to give the most adverse conditions with respect to actuation of the locking mechanism.
7.6.2.2.
A suitable apparatus for the tests specified in paragraph 7.6.2.1. above is described in Annex 4 to this Regulation. The design of any such test apparatus shall ensure that the required acceleration is given before the webbing is withdrawn out of the retractor by more than 5 mm and that the withdrawal takes place at an average rate of increase of acceleration of at least 55 g/s7 and not more than 150 g/s7 in testing sensitivity for strap movement and of at least 25 g/s7 and not more than 150 g/s7 in testing sensitivity for vehicle deceleration.7
7.6.2.3.
To check conformity with the requirements of paragraphs 6.2.5.3.1.3. and 6.2.5.3.1.4., the retractor shall be mounted on a horizontal table and the table tilted with a speed not exceeding 2° per second until locking has occurred. The test shall be repeated with tilting in other directions to ensure that the requirements are fulfilled.
7.6.3.
DUST RESISTANCE
7.6.3.1.
The retractor shall be positioned in a test chamber as described in Annex 5 to this Regulation. It shall be mounted in an orientation similar to that in which it is mounted in the vehicle. The test chamber shall contain dust as specified in paragraph 7.6.3.2. below. A length of 500 mm of the strap shall be extracted from the retractor and kept extracted, except that it shall be subjected to 10 complete cycles of retraction and withdrawal within one or two minutes after each agitation of the dust. For a period of five hours, the dust shall be agitated every 20 minutes for five seconds by compressed air free of oil and moisture at a gauge pressure of 5.5
×
10 5 ± 0.5
×
10 5 Pa entering through an orifice, 1.5 ± 0.1 mm in diameter.
7.6.3.2.
The dust used in the test described in paragraph 7.6.3.1. above shall consist of about 1 kg of dry quartz.
The particle size distribution is as follows:
(a)
Passing 150 mm aperture, 104 mm wire diameter: 99 to 100 per cent;
(b)
Passing 105 mm aperture, 64 mm wire diameter: 76 to 86 per cent;
(c)
Passing 75 mm aperture, 52 mm wire diameter: 60 to 70 per cent.
7.6.4.
RETRACTING FORCES
7.6.4.1.
The retracting force shall be measured with the safety-belt assembly fitted to a dummy as for the dynamic test prescribed in paragraph 7.7. below. The strap tension shall be measured at the point of contact with (but just clear of) the dummy while the strap is being retracted at the approximate rate of 0.6 m/min.
In the case of a safety-belt with tension-reducing device, the retracting force and strap tension shall be measured with the tension-reducing device in both operation mode and non-operation mode.
7.6.4.2.
Before the dynamic test described in paragraph 7.7. below. the seated dummy, which is clothed with a cotton shirt, shall be tilted frontward until 350 mm of the strap is withdrawn from retractor, and then released to the initial position.
7.7.
Dynamic test of belt assembly or of the restraint system
7.7.1.
The belt assembly shall be mounted on a trolley equipped with the seat and the general anchorages as defined in Annex 6, Figure 1, to this Regulation. However, if the belt assembly is intended for a specific vehicle or for specific types of vehicle, the distances between the manikin and the anchorages shall be determined by the Technical Service conducting the tests, either in conformity with the instructions for fitting supplied with the belt or in conformity with the data supplied by the manufacturer of the vehicle. If the belt is equipped with a belt adjustment device for height such as defined in paragraph 2.14.6. above, the position of the device and the means of securing it shall be the same as those of the vehicle design. In that case, when the dynamic test has been carried out for a type of vehicle it need not be repeated for other types of vehicle where each anchorage point is less than 50 mm distant from the corresponding anchorage point of the tested belt. Alternatively, manufacturers may determine hypothetical anchorage positions for testing in order to enclose the maximum number of real anchorage points.
7.7.1.1.
In the case of a safety-belt or restraint system forming part of an assembly for which type approval is requested as a restraint system, the safety-belt shall be mounted either as defined in paragraph 7.7.1. or on the part of the vehicle structure to which the restraint system is normally fitted and this part shall be rigidly attached to the test trolley in the way prescribed in paragraphs 7.7.1.2. to 7.7.1.6. below. In the case of a safety-belt or restraint system with pre-loading devices relying on component parts other than those incorporated in the belt assembly itself, the belt assembly shall be mounted in conjunction with the necessary additional vehicle parts on the test trolley in the manner prescribed in paragraphs 7.7.1.2. to 7.7.1.6. below. Alternatively, in the case where those devices cannot be tested on the test trolley, the manufacturer may demonstrate by a conventional frontal impact test at 50 km/h in conformity with the procedure ISO 3560 (1975) that the device complies with the requirements of this Regulation.
7.7.1.2.
The method used to secure the vehicle during the test shall not be such as to strengthen the anchorages of the seats or safety-belts or to lessen the normal deformation of the structure. No forward part of the vehicle shall be present which by limiting the forward movement of the manikin excepting the foot, would reduce the load imposed on the restraint system during the test. The parts of the structure eliminated can be replaced by parts of equivalent strength provided they do not hinder the forward movement of the manikin.
7.7.1.3.
A securing device shall be regarded as satisfactory if it produces no effect on an area extending over the whole width of the structure and if the vehicle or the structure is blocked or fixed in front at a distance of not less than 500 mm from the anchorage of the restraint system. At the rear the structure shall be secured at a sufficient distance rearwards of the anchorages to ensure that the requirements of paragraph
7.7.1.2. above are fulfilled.
7.7.1.4.
The seats of the vehicle shall be fitted and shall be placed in the position for driving use chosen by the Technical Service conducting approval tests to give the most adverse conditions with respect to strength, compatible with installing the manikin in the vehicle. The positions of the seats shall be stated in the report. The seat back, if adjustable for inclination, shall be locked as specified by the manufacturer or, in the absence of any specification, to an actual seat back angle as near as possible to 25° in the case of vehicles of categories M1 and N1 as near as possible to 15° in the case of vehicles of all other categories.
7.7.1.5. For the assessment of the requirements in paragraphs 6.4.1.4.1. and 6.4.1.4.1.1. the seat shall be positioned in its most forward driving position appropriate to the dimensions of the manikin.
7.7.1.6. For the assessment of the requirements in paragraphs 6.4.1.4.1. and 6.4.1.4.1.2. the seat adjustment shall be:
7.7.1.6.1. For front passenger seats: the occupant in the front shall be in its most forward travelling position according to the dimensions of the manikin. The positions of the seats shall be stated in the report.
7.7.1.6.2. For rear seats: For any testing position of rear seated occupants, the position of the tested seating position, shall be considered as positioned to the seats R-Point. If the seat back is adjustable, the seat back angle should be adjusted using the 3-D H Point machine with its torso angle as close as possible to 10°.
The seating position in front of the tested seating position shall be adjusted to the middle position of travel and height or in the nearest locking position thereto. If the seat back of this seat is adjustable, the seat back angle should be adjusted using the 3-D H Point machine with its torso angle as close as possible to 10°.
This may be proven by a contour on CAD or drawing of the in-vehicle situation.
7.7.1.7.
Alternatively to paragraphs 7.7.1.5. and 7.7.1.6., in the case where those devices cannot be tested on the test trolley, the manufacturer may demonstrate by a conventional frontal impact test at 50 km/h in conformity with the procedure ISO 3560:2013 that the device complies with the requirements of this Regulation.
7.7.1.8.
All the seats of any group of seats shall be tested simultaneously.
7.7.1.9.
The dynamic tests of the harness belt system shall be carried out without the crotch strap (assembly), if there is any.
7.7.2.
The belt assembly shall be attached to the manikin in Annex 7 to this Regulation as follows: a board 25 mm thick shall be placed between the back of the manikin and the seat back. The belt shall be firmly adjusted to the manikin. The board shall then be removed so that the entire length of its back is in contact with the seat back. A check shall be made to ensure that the mode of engagement of the two parts of the buckle entails no risk of reducing the reliability of locking.
7.7.3.
The free ends of the straps shall extend sufficiently far beyond the adjusting devices to allow for slip.
7.7.4.
DECELERATION OR ACCELERATION DEVICES
The applicant shall choose to use one of the two following devices:
7.7.4.1.
Deceleration test device
The trolley shall be so propelled that at the moment of impact its free running speed is 50 km/h ± 1 km/h and the manikin remains stable. The stopping distance of the trolley shall be 40 cm ± 5 cm. The trolley shall remain horizontal throughout deceleration. The deceleration of the trolley shall be achieved by using the apparatus described in Annex 6 to this Regulation or any other device giving equivalent results. This apparatus shall comply with the performance hereafter specified:
The deceleration curve of the trolley, weighted with inert mass to produce a total mass of 455 kg ± 20 kg for safety-belts tests and 910 kg ± 40 kg for restraining systems tests where the nominal mass of the trolley and vehicle structure is 800 kg, shall remain within the hatched area of the graph in Annex 8. If necessary, the nominal mass of the trolley and attached vehicle structure can be increased by increments of 200 kg, in which case, an additional inert mass of 28 kg per increment shall be added. In no case shall the total mass of the trolley and vehicle structure and inert masses differ from the nominal value for calibration tests by more than ± 40 kg. During calibration of the stopping device, the speed of the trolley shall be 50 km/h ± 1 km/h and the stopping distance shall be of 40 cm ± 2 cm.
7.7.4.2.
Acceleration test device
The trolley shall be so propelled that its total velocity change DV is 50 km/h
The trolley shall remain horizontal during the acceleration. The acceleration of the trolley shall be achieved by using the apparatus complying with the performance hereafter specified:
The acceleration curve of the trolley, weighted with inert mass, shall remain within the hatched area of the graph in Annex 8, and stay above the segment defined by the coordinates 10 g, 5 ms and 20 g, 10 ms. The start of the impact (T0) is defined, according to ISO 17 373 (2005) for a level of acceleration of 0.5 g. In no case shall the total mass of the trolley and vehicle structure and inert masses differ from the nominal value for calibration tests by more than ± 40 kg. During calibration of the acceleration test device, trolley’s total velocity change DV shall be 51 km/h Despite the fulfilment of the above requirements, the Technical Service shall use a mass of trolley (equipped with its seats), as specified in paragraph 1 of Annex 6, greater than 380 kg.
7.7.5.
The trolley speed immediately before impact (only for deceleration trolleys, needed for stopping distance calculation), the trolley acceleration or deceleration, the forward displacement of the manikin and the speed of the chest at a 300 mm displacement of the chest shall be measured. The velocity change will be calculated by integration of the recorded trolley acceleration or deceleration. The distance to achieve the first 50 km/h km/h of the velocity change of the trolley may be calculated by double integration of the recorded trolley deceleration.
7.7.6.
After impact, the belt assembly or restraint system and its rigid parts shall be inspected visually, without opening the buckle, to determine whether there has been any failure or breakage. In the case of restraint systems it shall also be ascertained, after the test, whether the parts of the vehicle structure which are attached to the trolley have undergone any visible permanent deformation. If there is any such deformation this shall be taken into account in any calculation made in accordance with paragraph 6.4.1.4.1. above.
7.7.7.
However, if the tests were performed at a higher speed and/or the acceleration curve have exceeded the upper level of the hatched area and the safety belt meets the requirements, the test shall be considered satisfactory.
7.8.
Buckle-opening test
7.8.1.
For this test, belt assemblies or restraint devices which have already undergone the dynamic test in conformity with paragraph 7.7. above shall be used.
7.8.2.
The belt assembly shall be removed from the test trolley without the buckle being opened. A load shall be applied to the buckle by direct traction via the straps tied to it so that all the straps are subjected to the force of daN. (It is understood that n is the number of straps linked to the buckle when it is in a locked position.) In the case where the buckle is connected to a rigid part, the load shall be applied at the same angle as the one formed by the buckle and the rigid end during the dynamic test. A load shall be applied at a speed of 400 ± 20 mm/min to the geometric centre of the buckle-release button along a fixed axis running parallel to the initial direction of motion of the button. During the application of the force needed to open the buckle, the buckle shall be held by a rigid support. The load quoted above shall not exceed the limit indicated in paragraph 6.2.2.5. above. The point of contact of the test equipment shall be spherical in
form with a radius of 2.5 mm ± 0.1 mm. It shall have a polished metal surface.
7.8.3.
The buckle-opening force shall be measured and any failure of the buckle noted.
7.8.4.
After the buckle-opening test, the components of the belt assembly or of the restraint device which have undergone the tests prescribed in paragraph 7.7. above shall be inspected and the extent of the damage sustained by the belt assembly or restraint device during the dynamic test shall be recorded in the test report.
7.9.
Additional tests on safety-belts with pre-loading devices
7.9.1.
CONDITIONING
The pre-loading device may be separated from the safety-belt to be tested and kept for 24 hours at a temperature of 60 ±5 °C. The temperature shall then be raised to 100 ± 5 °C for two hours. Subsequently it shall be kept for 24 hours at a temperature of -30 ± 5 °C. After being removed from conditioning, the device shall warm up to ambient temperature. If it has been separated it shall be fitted again to the safety-belt.
7.10.
Test report
7.10.1.
The test report shall record the results of all the tests in paragraph 7. above and in particular:
(a) The type of device used for the test (acceleration or deceleration device);
(b) The total velocity change;
(c) The trolley speed immediately before impact only for deceleration trolleys;
(d)
The acceleration or deceleration curve during all the velocity change of the trolley;
(e)
The maximum forward displacement of the manikin;
(f)
The place - if it can be varied - occupied by the buckle during the test;
(g)
The buckle-opening force;
(h)
Any failure or breakage;
(i)
For any restrain system other than the driver the contour of the contact should be evaluated versus the movement of the manikin in the sled by the technical service in this report. If by virtue of paragraph 7.7.1. the anchorages prescribed in Annex 6 to this Regulation have not been respected, the test report shall describe how the belt assembly or the restraint system was installed and shall specify important angles and dimensions.
8.
REQUIREMENTS CONCERNING THE INSTALLATION IN THE VEHICLE
8.1.
Safety-belt and restraint systems equipment
8.1.1.
With the exception of seating intended solely for use when the vehicle is stationary, the seats of vehicles of categories M1, M2 (of Class III or B 8), M3 (of Class III or B 8) and N shall be equipped with safety-belts or restraint systems which satisfy the requirements of this Regulation. Contracting Parties applying this Regulation may demand the installation of safety belts on M2 and M3 vehicles belonging to Class II. When fitted, the safety belts and/or restraint systems in Class I, II or A vehicles belonging to category M2 or M3 have to be in compliance with the requirements of this Regulation. Contracting Parties may, under national law, allow the installation of safety belts or restraint systems other than those covered by this Regulation provided that they are intended for disabled people. Restraint systems complying with the provisions of Annex 8 of the 02 series of amendments to UN Regulation No. 107 are exempted from the provisions of this Regulation. Class I, or A vehicles belonging to category M2 or M3 may be fitted with safety belts and/or restraint systems conforming to the requirements of this Regulation. Only vehicles belonging to category M2 or M3 may be fitted with restraint systems comprising a flexible shoulder adjustment device for height (paragraph 2.14.7.).
8.1.2.
The types of safety-belts or restraint systems for each seating position where installation is required shall be those specified in Annex 16 (with which neither non-locking retractors (paragraph 2.14.1.) nor manually unlocking retractor (paragraph 2.14.2.) can be used). For all seating positions where lap belts type B are specified in Annex 16 lap belts type Br3 are permitted except in the case that, in use, they retract to such an extent as to reduce comfort in a notable way after normal buckling up.
8.1.2.1.
However, for outboard seating positions, other than front, of vehicles of the category N1 shown in Annex 16 and marked with the symbol Ø, the installation of a lap belt of type Br4m or Br4Nm is allowed, where there exists a passage between a seat and the nearest side wall of the vehicle intended to permit access of passengers to other parts of the vehicle. A space between a seat and the side wall is considered as a passage, if the distance between that side wall, with all doors closed, and a vertical longitudinal plane passing through the centre line of the seat concerned - measured at the R-point position and perpendicularly to the median longitudinal plane of the vehicle - is more than 500 mm.
8.1.3.
Where no safety-belts are required any type of safety-belt or restraint system conforming to this Regulation may be provided at the choice of the manufacturer. A-type belts of the types permitted in Annex 16 may be provided as an alternative to lap belts for those seating positions where lap belts are specified in Annex 16.
8.1.4.
On three point belts fitted with retractors, one retractor shall operate at least on the diagonal strap.
8.1.5.
Except for vehicles of category M1 an emergency locking retractor of type 4N (paragraph 2.14.5.) may be permitted instead of a retractor of type 4 (paragraph 2.14.4.) where it has been shown to the satisfaction of the services responsible for the tests that the fitting of a type 4 retractor would not be practical.
8.1.6.
For the front outboard and the front centre seating positions shown in Annex 16 and marked with the symbol *, lap belts of the type specified on that annex shall be considered adequate where the windscreen is located outside the reference zone defined in Annex 1 to UN Regulation No. 21. As regards safety-belts, the windscreen is considered as part of the reference zone when it is capable of entering into static contact with the test apparatus according to the method described in Annex 1 of Regulation No. 21.
8.1.7.
Every seating position in Annex 16 marked with the symbol ·, three-point belts of a type specified in Annex 16 shall be provided unless one of the following conditions is fulfilled, in which case two-point belts of a type specified in Annex 16 may be provided.
8.1.7.1.
There is a seat or other vehicle parts conforming to paragraph 3.5. of Appendix 1 to UN Regulation No. 80 directly in front, or
8.1.7.2.
No part of the vehicle is in or, when the vehicle is in motion, capable of being in the reference zone; or
8.1.7.3.
Parts of the vehicle within the said reference zone comply with the energy absorbing requirements set out in Appendix 6 of UN Regulation No. 80.
8.1.7.4.
Paragraphs 8.1.7.1. to 8.1.7.3. shall not apply to a driver’s seat.
8.1.8.
The vehicle shall carry information to the effect that it is equipped with frontal protection airbags for seats.
8.1.8.1.
For a vehicle fitted with an airbag assembly intended to protect the driver, this information shall consist of the inscription "AIRBAG" located in the interior of the circumference of the steering wheel; this inscription shall be durably affixed and easily visible