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Original (TFRA-03-10)Status of discussionProposal of JapanOpen
1ScopeClose
1.1This Regulation applies to:
1.1.1PART I: Approval of audible reverse warning devices which are intended for fitting to motor vehicles of categories [M2, N2], N3 and M3; (1)There was an fatal accidents in Japan when a N2 category vehicle was reversing. The reverse warning sound of the vehicle was switched-off. . So, Japan proposes that M2(above 3.5t) and N2(above 3.5t) be included within the scope of this regulation.(1) As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev.6, para. 2 - www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html
1.1.2PART II: Approval of motor vehicles listed in 1.1.1. with regard to fitting of devices as specified under Part I automatically activated when reverse gear is selected and the propulsion system is on.
I.Part I. Audible reverse warning device
2Definitions
For the purpose of this Regulation:
"Audible reverse warning device" means a device, emitting an acoustic signal which is intended to give audible reverse warning of the presence of a vehicle automatically activated when reverse gear is selected and the propulsion system is on engine running , with the primary purpose to fulfil the requirements of this Regulation;To avoid misunderstanding that this regulation is for warning sounds of vehicle emitted to outside, words in red is newly added. "Audible reverse warning device" means a device, emitting an acoustic signal for outside of the vehicle which is intended to give audible reverse warning of the presence of a vehicle automatically activated when reverse gear is selected and the propulsion system is on engine running , with the primary purpose to fulfil the requirements of this Regulation;
2.2.“Low Level” means the emitted sound level of the audible reverse warning device which is sufficient for safety of vulnerable road users during quiet times (at least during 10:00 pm to 5:00 am) and/or quiet areas with background noise Lmax of around 40 dB(A).These texts are written to share common image when each sound level mode should be used. These texts are unnecessary for final draft. Anyone can't control ambient noise level. 
2.3“Normal Level” means the emitted sound level of the audible reverse warning device which is sufficient for safety of vulnerable road users during normal traffic hours and/or areas with background noise Lmax of not more than 60 dB(A) (e.g. during 5:00 am to 10:00 pm)Unnecessary for final draft.
2.4.“High Level” means the emitted sound level of the audible reverse warning device which is sufficient for safety of vulnerable road users during very loud times and/or loud areas with background noise Lmax of not more than 80 dB(A) (e.g. road construction sites)Unnecessary for final draft.
2.5."Type of audible reverse warning device" means audible reverse warning devices not differing essentially from each other with respect to such matters as:
2.5.1.Trade name or mark;
2.5.2.Principles of operation regarding sound pressure amplitude and frequency range;Unnecessary.
2.5.2.1.Fixed arrangementsUnnecessary.
2.5.2.2.Variable arrangements due background noiseUnnecessary.
2.5.3.Type of electrical supply (direct or alternating current); Unnecessary. Reverse warning sound device is supplied with only direct current.
2.5.4.Rated voltage;
2.5.5.Shape or kind of sound outlet(s);Unnecessary.
2.5.6.Rated sound frequency or frequencies;Unnecessary. Japan proposes that limit values do not change depending on sound type.
3Application for approval
3.1.The application for approval of a type of audible reverse warning device shall be submitted by its manufacturer or by his duly accredited representative.
3.2.It shall be accompanied by a duly filled technical information document, either in paper format in triplicate or alternatively upon agreement with the Type Approval Authority in electronic format. A model of the technical information document is shown in Annex 1A.
3.3.In addition, the application for approval shall be accompanied by two samples of the type of audible reverse warning device.
3.4.The Type Approval Authority shall verify the existence of satisfactory arrangements for ensuring effective control of the conformity of production before type approval is granted.
4Markings
4.1.Audible reverse warning devices excluding mounting accessories, shall bear:
4.1.1.The trade name or mark of the manufacturer and the model commercial name and/or number;
4.1.2.The approval mark according to paragraph 5.5.
4.2.The approval mark shall be shown on the audible reverse warning device according to paragraph 5.5. Each sample shall have a space of adequate dimensions for the approval mark; this space shall be indicated in the drawing.
4.3.All markings shall be clearly legible and indelible.
5Approval
5.1.If the two samples submitted for approval conform to the provisions of paragraph 6. below, approval for this type of audible reverse warning device shall be granted.
5.2.An approval number shall be assigned to each type approved. Its first two digits (at present 00 for the UN Regulation in its original form) shall indicate the series of amendments incorporating the most recent major technical amendments made to the UN Regulation at the time of issue of the approval. The same Contracting Party may not assign this number to another type of audible reverse warning device.
5.3.The same approval number may be assigned to types of audible reverse warning device differing only with respect to rated voltage, rated sound frequency or frequencies.It is necessary to discuss whether the devices of different frequencies shall be regarded as the same type or not.
5.4. Communication on approval or refusal or extension or withdrawal of approval or production definitely discontinued of a type of audible reverse warning device pursuant to this UN Regulation shall be communicated to the Parties to the Agreement applying this UN Regulation by means of a form conforming to the model in Annex 1A to the UN Regulation.
5.5.On every audible reverse warning device which conforms to a type approved under this Regulation, there shall be affixed conspicuously, in an easily accessible place indicated on the approval form, an international approval mark comprising:
5.5.1.A circle containing the letter "E" followed by the distinguishing number of the country granting approval. (2)(2) The distinguishing numbers of the Contracting Parties to the 1958 Agreement are reproduced in Annex 3 to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document ECE/TRANS/WP.29/78/Rev. 6, Annex 3 - www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html
5.5.2.An approval number;
5.5.3.An additional symbol in the form of a figure in Roman numerals, showing the class to which the audible reverse warning device belongs.
5.6.Annex 2, Section I, to this Regulation gives an example of the arrangement of the approval mark.
5.7. The Type Approval Authority or its duly accredited technical service shall verify the arrangements of the marks for ensuring effective control of the conformity of production before type approval is granted.
6Specifications
6.1General specifications
6.1.1The audible reverse warning device shall emit an [intermittent] sound acting automatically, activated when reverse gear is selected and the engine running. For audible reverse warning devices, supplied with alternating current, this requirement shall apply only at constant generator speed, within the range specified in paragraph 6.3.4.2. The type approval tests shall be carried out on two samples of each type submitted by the manufacturer for approval; both the samples shall be subjected to all the tests and must conform to the technical specifications laid down.In a perspective of "Design freedom", Japan proposes to delete "[intermittent]".
6.1.2The audible reverse warning device shall have acoustic characteristics (spectral distribution of the acoustic energy, sound pressure level) and mechanical characteristics such that it passes, in the order indicated, the tests according to paragraphs 6.3. and 6.4.
6.2Measuring instruments
6.2.1Acoustic measurements
6.2.1.1When no general statement or conclusion can be made about conformance of the sound level meter model to the full specifications of IEC 61672-1:2013 (3), the apparatus used for measuring the sound pressure level shall be a sound level meter or equivalent measurement system meeting the requirements of Class 1 instruments as described in IEC 61672-3:2013.(3) Measurements shall be carried out using the "fast" response of the acoustic measurement instrument and the "A" weighting curve as described in IEC 61672-1:2013.(3) When using a system that includes a periodic monitoring of the A-weighted sound pressure level, a reading should be made at a time interval not greater than 30 ms. When measurements of the sound pressures in the one-third mid-band frequencies 2,000, 2,500, 3,150 and 4,000 Hz are carried out for one-third octaves, the instrumentation shall meet all requirements of IEC 61260-1-2014, class 1. The sound pressure level in the mid-band frequency 2,500 Hz shall be determined by adding the quadratic means of the sound pressures in the one-third mid-band frequencies 2,000, 2,500, 3,150 and 4,000 Hz. When measuring the rated sound frequency (or frequencies), the digital sound recording system shall have at least a 16 bit quantization. The average auto power spectrum shall be determined, using a Hanning window and at least 66.6 per cent overlap averages. The instruments shall be maintained and calibrated in accordance with the instructions of the instrument manufacturer. Second paragraph is unnecessary (words in red). Japan proposes not to define the requirements regarding frequency in this Regulation.(3) For the purpose of this Regulation, the previous versions of the standards IEC 61672-1:2004 and IEC 61672-3:2006 may be applied.
6.2.1.2.Calibration of the entire Acoustic Measurement System for a Measurement Session At the beginning and at the end of every measurement session the entire measurement system shall be checked by means of a sound calibrator that fulfils the requirements for sound calibrators of at least precision Class 1 according to IEC 60942:2003. Without any further adjustment the difference between the readings of two consecutive checks shall be less than or equal to 0.5 dB. If this value is exceeded, the results of the measurements obtained after the previous satisfactory check shall be discarded.
6.2.1.3.Compliance with requirements Compliance of the sound calibrator with the requirements of IEC 60942:2003 and compliance of the instrumentation system with the requirements of IEC 61672-3:2013(3) shall be confirmed by the existence of a valid certificate of compliance.
6.2.2Instrumentation for other measurements The voltage shall be measured with instrumentation having an accuracy of ±0.05 V or better. The resistance shall be measured with instrumentation having an accuracy of ±0.01 Ω or better. The distance shall be measured with instrumentation having an accuracy of ±5 mm or better. The time shall be measured with instrumentation having an accuracy of ±0.02 s or better. The meteorological instrumentation used to monitor the environmental conditions during the test shall include the following devices, which meet at least the following accuracy: (a) Temperature measuring device, ±1° C; (b) Wind speed-measuring device, ±1.0 m/s; (c) Barometric pressure measuring device, ±5 hPa; (d) A relative humidity measuring device, ±5 per cent.
6.3Measurement of the sound characteristics.
6.3.1The audible reverse warning device should, preferably, be tested in an anechoic chamber. Alternatively, it may be tested in a semi-anechoic chamber or in an open space.(4) In these cases, precautions shall be taken to avoid reflections from the ground within the measuring area (for instance by erecting a set of absorbing screens). The wind speed shall be not more than 5 m/s. The ambient noise level shall be at least 10 dB lower than the sound pressure level to be measured. If the test facility shall be qualified as an anechoic environment it shall meet requirements of Annex 3. (4) The site may take the form, for instance, of an open space of 50 m radius, the central part of which must be practically horizontal over a radius of at least 20 m, the surface being of concrete, asphalt or a similar material, which must not be covered with powdery snow, tall weeds, or loose soil or cinders, as mentioned in ISO 10844:2014. The measurements shall be made on a clear day. No-one other than the observer reading the instrument shall remain near the audible reverse warning device or the microphone, since the presence of spectators may affect the readings of the instrument to a considerable extent, if they are near the audible reverse warning device or the microphone. Any peak which appears to be unrelated to the general sound level shall be disregarded in the reading.
6.3.2The audible reverse warning device to be tested and the microphone shall be placed at the same height. This height shall be 1.20 ± 0.05 m. In alternative, the audible reverse warning device to be tested and the microphone may be placed in another traverse line which complies with Annex 3 specification for anechoic environment. The microphone shall be so placed that its diaphragm is at a distance of [2.00] ± 0.05 m from the plane of the sound outlet of the audible reverse warning device. The microphone must be positioned facing the front surface emitting sound of the audible reverse warning device in the direction in which the maximum sound level can be measured. (see figures in Annex 4). Horizontal distance between microphone and warning device is 1 m in JASO (Japanese Automobile Standards Organization) standard. Requirements for facilities should be kept to the minimum essentials. Upper limit value of R28 part I (118dB @ 2m) is too big to measure at 1m distance. Sound level of RWS is very small comparing with that of the horn. There is no problem to measure RWS at 1m distance. Japan proposes 1 m distance measurement in chamber.
6.3.3The audible reverse warning device shall be mounted rigidly, by means of the equipment indicated by the manufacturer, on a support whose mass is at least ten times that of the audible reverse warning device under test and not less than 30 kg. In addition, arrangements must be made ensuring that reflections on the sides of the support and its own vibrations have no appreciable effect on the measuring results. Unnecessary. It is enough to describe as "warning device shall be fixed solid ".
6.3.4The audible reverse warning device shall be supplied with current, as appropriate, at the following voltages:The audible reverse warning device shall be supplied with rated voltage and be measured.
6.3.4.1In the case of audible reverse warning device supplied with direct current, at a voltage measured at the terminal of the electric power source of 13/12 of the rated voltage;Unnecessary. These texts are applied only to the horn.
6.3.4.2In the case of audible reverse warning device supplied with alternating current, the current shall be supplied by an electric generator of the type normally used with this type of audible reverse warning device. The acoustic characteristics of the audible reverse warning device shall be recorded for electric generator speeds corresponding to 50 per cent, 75 per cent and 100 per cent of the maximum speed indicated by the manufacturer of the generator for continuous operation. During this test, no other electrical load shall be imposed on the electric generator. The endurance test described in paragraph 6.4. shall be carried out at a speed indicated by the manufacturer of the equipment and selected from the above range.Unnecessary. These texts are applied only to the horn.
6.3.5If a rectified current source is used for the test of an audible reverse warning device supplied with direct current, the alternating component of the voltage measured at its terminals, when the audible reverse warning devices are in operation, shall not be more than 0.1 V, peak to peak.Unnecessary. These texts are applied only to the horn.
6.3.6For audible reverse warning device supplied with direct current, the resistance of the connecting leads, expressed in ohms, including terminals and contacts, shall be as close as possible to (0,10/12) x rated voltage in volt. Unnecessary. These texts are applied only to the horn.
6.3.7Under the conditions set forth above, the sound-pressure level weighted in accordance with curve A shall not exceed the following values forThis sentence is not connected smoothly to 6.3.7.1. and 6.3.7.2 in the context.
6.3.7.1Automatically non-adjustable audible reverse warning device to ambient sound emission [Table 1]
1. Sound type It is difficult to define each sound type. In a perspective of "Design freedom", new sound may be excluded. In Japan, human voice message type is popular to some extent. If the three sound types in the table are defined, human voice message type may be excluded. Japan proposes same limit values for all sound type. 2. Mode How should we treat 3 sound level modes? It is necessary to discuss whether we really need to define 3 sound level mode.
6.3.7.2Automatically adjustable audible reverse warning device to ambient sound emission to ambient sound emission shall be at least: (a) for tonal sound [+ 5 dB(A) ± 1] to the ambient sound emission between [63 to 100] dB(A) (b) for broadband sound from 400 Hz to 10 kHz [+ 5 dB(A) ± 1] to the ambient sound emission between [60 to 95] dB(A) (c) for 1/3 Octave Band Sound in between 400 Hz and 4 kHz [+ 1 dB(A) ± 5] to the ambient sound emission between [55 to 93] dB(A). "to ambient sound emission" is duplicated. In general, ambient noise level should be 10dB lower than measurement target sound. "[+ 5 dB(A) ± 1] to the ambient sound" is not appropriate in technical aspect. The test procedure to confirm that the warning sound passes the limit values under different ambient sound levels. In order to draft the test procedure to fulfill these requirements, who can provide the technical data and draft the text?
6.3.8The specifications indicated above shall also be met by an audible reverse warning device subjected to the endurance test referred to in paragraph 6.4. below, with the supply voltage varying between 115 per cent and 95 per cent of its rated voltage for audible reverse warning device supplied with direct current or, for audible reverse warning device supplied with alternating current, between 50 per cent and 100 per cent of the maximum speed of the generator indicated by the manufacturer for continuous operation.Unnecessary. These texts are applied only to the horn.
6.3.9The time lapse between the moment when the audible reverse warning device is actuated and the moment when the sound reaches the minimum value prescribed in Table 1 above shall not exceed [0.5] second measured at an ambient temperature of 20 + 5 ºC. Unnecessary. These texts are applied only to the horn.
6.3.10To confirm the rated sound frequency (or frequencies) of audible reverse warning device the tests to measure this parameter using a spectrum analyzer with a frequency resolution of at least 1 Hz shall be conducted. The measured frequency (or frequencies) of the audible reverse warning device may differ from the rated sound frequency (or frequencies) no more than 10 per cent.Unnecessary.
6.4Endurance test
6.4.1The audible reverse warning device shall be supplied with current at the rated voltage and with the connecting lead resistances specified in paragraphs 6.3.4. to 6.3.6. above, and operated respectively for a times of [24] hours. During the test, the audible reverse warning device shall be ventilated by an air current having a speed of approximately 10 m/s. Endurance test is unnecessary. Endurance test is not required in R138.
6.4.2If the test is made in an anechoic chamber, the chamber shall be large enough to ensure normal dispersal of the heat released by the audible reverse warning device during the test.
6.4.3The ambient temperature in the testing room shall be between +15 and +30 ºC inclusively.
6.4.4If, after the audible reverse warning device has been operated for half the number of times prescribed, the sound-level characteristics are no longer the same as before the test, the audible reverse warning device may be adjusted. After being operated the prescribed number of times, and after further adjustment if necessary, the audible reverse warning device must pass the test described in paragraph 6.3. above.
7Modification and extension of approval of the type of the audible reverse warning device
7.1Every modification of the type of the audible reverse warning device shall be notified to the Type Approval Authority which granted approval to that type of the audible reverse warning device. This Type Approval Authority may then:
7.1.1Either take the view that the modifications made are not likely to have any appreciable adverse effect;
7.1.2Or call for a new report from the Technical Service responsible for the tests.
7.2Communication on confirmation of the approval, with particulars of the modifications, or of refusal of approval shall be communicated to the Parties to the Agreement applying this Regulation, in accordance with the procedure indicated in paragraph 5.4. above.
7.3he Type Approval Authority issuing the extension of approval shall assign a series number to each communication form drawn up for such an extension.
8Conformity of production
The conformity of production procedures shall comply with those set out in the 1958 Agreement, Schedule 1 (E/ECE/TRANS/505/Rev.3) with the following requirements:
8.1Audible reverse warning device approved under this Regulation shall be so manufactured as to conform to the type approved by meeting the requirements set forth in paragraph 6. above.
8.2The authority which has granted type approval may at any time verify the conformity control methods applied in each production facility. The normal frequency of these verifications shall be once every two years.
9 Penalties for non-conformity of production
9.1The approval granted to a type of audible reverse warning device pursuant to this Regulation may be withdrawn if the conditions set forth in paragraph 8.1. are not complied with or if the audible reverse warning device fails to pass the checks referred to in paragraph 8.2. above.
9.2Should a Party to the Agreement applying this Regulation withdraw an approval which it has previously granted, it shall forthwith notify the other Contracting Parties applying this Regulation by means of a copy of the approval form bearing at the end in large letters the statement, signed and dated: "APPROVAL WITHDRAWN".
10Production definitively discontinued
If the holder of an approval granted pursuant to this Regulation discontinues the production of the type of audible reverse warning device approved, he shall inform the authority which granted the approval. Upon receipt of the communication, this authority shall inform the other Parties to the Agreement applying this Regulation by means of a copy of the approval form bearing at the end in large letters the statement, signed and dated: "PRODUCTION DISCONTINUED".
II. Part II. Audible reverse warning signals of motor vehicles
11Definitions
For the purpose of this Regulation,
11.1."Approval of the motor vehicle" shall be understood to mean approval of a vehicle type with regard to its audible reverse warning signal;
11.2."Vehicle type" shall be understood to mean vehicles not essentially different from another with respect to such matters as:
11.2.1.The number and type(s) of audible reverse warning devices fitted on the vehicle;
11.2.2.The mountings used to fit the audible reverse warning device(s) to the vehicle;It is necessary to discuss whether mounting effects on sound level or not.
11.2.3.The position of the audible reverse warning device(s) on the vehicle (e.g. hight of mounting, position to the end of the vehicle, etc.);It is necessary to consider what will affect on sound level.
11.2.4.The rigidity of the parts of the structure on which the audible reverse warning device(s) is (are) mounted; It is necessary to consider whether rigidity of the parts affects on sound level or not.
11.2.5. The shape and materials of the bodywork at the rear of the vehicle which might affect the level of the sound emitted by the audible reverse warning device(s) and have a masking effect.
12Application for approval
12.1.The application for approval of a vehicle type with regard to its audible reverse warning signals shall be submitted by the vehicle manufacturer or by his duly accredited representative;
12.2.It shall be accompanied by a duly filled technical information document, either in paper format in triplicate or alternatively upon agreement with the Type Approval Authority in electronic format. A model of the technical information document is shown in Annex 1B.
12.3.A vehicle representative of the vehicle type to be approved shall be submitted to the technical service responsible for the approval tests.
13Approval
13.1.If the vehicle type submitted for approval pursuant to this Regulation meets the requirements of paragraph 14. below, approval for this vehicle type shall be granted.
13.2.An approval number shall be assigned to each type approved. Its first two digits (at present 00 for the UN Regulation in its original form) shall indicate the series of amendments incorporating the most recent major technical amendments made to the UN Regulation at the time of issue of the approval. The same Contracting Party may not assign this number to another vehicle type.
13.3.Communication on approval or extension or withdrawal of approval or production definitely discontinued of a vehicle type pursuant to this Regulation shall be communicated to the Parties to the Agreement applying this Regulation by means of a form conforming to the model in Annex 1B to the UN Regulation.
13.4.On every vehicle which conforms to a vehicle type approved under this Regulation there shall be affixed conspicuously, in an easily accessible place indicated on the approval form, an international approval mark comprising:
13.4.1.A circle surrounding the letter "E" followed by the distinguishing number of the country which has granted approval. (5)(5) The distinguishing numbers of the Contracting Parties to the 1958 Agreement are reproduced in Annex 3 to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document ECE/TRANS/WP.29/78/Rev. 6, Annex 3 - www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html.
13.4.2.The number of this Regulation, followed by the letter "R", a dash and the approval number placed to the right of the circle prescribed in paragraph 13.4.1.
13.5.If the vehicle conforms to a vehicle type approved, under one or more other Regulations annexed to the Agreement, in the country which has granted approval under this Regulation, the symbol prescribed in paragraph 13.4.2. need not be repeated; in such a case the UN Regulation and approval numbers and the additional symbols of all the UN Regulations under which approval has been granted in the country which has granted approval under this Regulation shall be placed in vertical columns to the right of the symbol prescribed in paragraph 13.4.
13.6.The approval mark must be clearly legible and indelible.
13.7.The approval mark shall be placed near the plate bearing the characteristics of the vehicle and may also be affixed to this plate.
13.8.Annex 2, Section II, to this Regulation gives an example of the arrangement of the approval mark.
13.9.The Type Approval Authority shall verify the existence of satisfactory arrangements for ensuring effective control of the conformity of production before type approval is granted.
14Specifications
14.1.General specifications
14.1.1The audible reverse warning device shall be so designed, constructed and assembled as to enable the vehicle, in normal use, despite the vibration to which it may be subjected, to comply with the provisions of this Regulation.The audible reverse warning device shall be so designed, constructed and assembled as to enable the vehicle when reverse gear is selected and the engine running, …
14.1.2The audible reverse warning device(s) and its (their) mounting elements to the vehicle shall be so designed, constructed and assembled as to be able to reasonably resist the corrosive phenomena to which it is exposed with regards to the conditions of use of the vehicle, including regional climate differences.
14.2Specifications regarding sound levels
14.2.1The sound made by the audible reverse warning device(s) fitted to the vehicle type submitted for approval shall be measured by the methods described in paragraph 14.3.;
14.2.2Measured under the conditions specified in paragraphs 14.3. the sound-pressure level of the signal tested of theThis text is uncompleted.
14.2.2.1 Automatically non-adjustable audible reverse warning device to ambient sound emission shall be: [Table 2]Same as 6.3.7.1.
14.2.2.2Automatically adjustable audible reverse warning device to ambient sound emission shall be at least: (a) for tonal sound [+ 5 dB(A) ± 1] to the ambient sound emission between [45 to 90] dB(A) (b) for broadband sound from 400 Hz to 10 kHz [+ 5 dB(A) ± 1] to the ambient sound emission between [40 to 90] dB(A) (c) for 1/3 Octave Band Sound in between 400 Hz and 4 kHz [+ 1 dB(A) ± 5] to the ambient sound emission between [40 to 90] dB(A). Same as 6.3.7.2.
14.2.3The values measured in accordance with the provisions of paragraph 14.3 shall be entered in the test report and a communication corresponding to the model shown in Annex 1B.
14.3Methods of measurement on stationary vehicle
14.3.1The vehicle shall comply with the following specifications:
14.3.1.1The audible reverse warning device(s) fitted on the vehicle shall be of a type approved under this Regulation (Part I);
14.3.1.2.The test voltage shall be as specified in paragraph 6.3.4. of this Regulation; In case of audible reverse warning device(s) supplied with direct current, the test voltage shall be supplied by either: (a) The vehicle battery only; or (b) The vehicle battery with the vehicle engine warmed-up and at idle; or (c) With an external power source supply connected to the audible reverse warning device(s) .
14.3.2.The sound pressure level and other measurements shall be made according to the conditions specified in paragraph 6.2. of this Regulation.
14.3.3he A-weighted sound pressure level emitted by the audible reverse warning device(s) fitted on the vehicle shall be measured at a distance of 7.00 ± 0.10 m to the rear of the vehicle (see figures in Annex 5), which is being placed on an open site (6) , on flat concrete or asphalt surface. (6) See paragraph 6.3.l., footnote 4.
14.3.4The microphone of the measuring instrument shall be placed approximately (± 0.10 m) in the mean longitudinal plane of the vehicle;
14.3.5 Background noise and wind noise must be at least 10 dB (A) below the sound to be measured; If the difference between the ambient noise and the measured sound is between 10 and 15 dB(A), in order to calculate the test results the appropriate correction shall be subtracted from the readings on the sound-level meter, as in the following table: The background noise shall be measured for duration of 10 seconds immediately before and after a series of vehicle tests. The measurements shall be made with the same microphones and microphone locations used during the test. The A-weighted maximum sound pressure level shall be reported.
14.3.6The maximum sound-pressure level shall be sought within the range of 0.5 and 1.5 m above the ground, and the height, at which the maximum sound-pressure level was found has to be fixed for the purpose of taking the measurements prescribed below. The sound pressure level shall be measured at that fixed height for a duration of at least 3 seconds. The final result shall be the maximum A-weighted sound pressure level of the reading period, rounded mathematically to the nearest integer.
14.4Pause function The manufacturer may install a function for temporary deactivation of the reverse warning sound when the vehicle equipped with rear camera or SONAR which complied with UN ECE R46. Any other deactivation function, which does not satisfy the specification below, is prohibited.Based on R138, sentences how to treat "Pause switch" is newly added.
14.4.1The function shall be located so that it is operable by the driver in a normal seating position.Based on R138, the text how to treat "Pause switch" is newly added.
14.4.2[In the case when the pause function is activated, the suspension of reverse warning sound has to be clearly indicated to the driver.]Based on R138, the text how to treat "Pause switch" is newly added. The indicator will be installed in front panel. Can a driver watch the front panel indicator when he drives to rear?
14.4.3[The RWS shall be reactivated when the vehicle is started upon each vehicle turn-off.]Based on R138, the text how to treat "Pause switch" is newly added. Mechanical switch can not on/off electrically.
14.4.4Owner’s manual information If a pause function is installed, the manufacturer shall provide the owner with information (e.g. in the owner’s manual) on its effect: "The pause function of the reverse warning sound device shall not be used unless for an obvious lack of necessity to emit sound for alert in the surrounding area and that it is certain that there are no pedestrians within the short distance."Based on R138, the texts how to treat "Pause switch" are newly added.
15Modification and extension of approval of the vehicle type
15.1Every modification of the vehicle type shall be notified to the Type Approval Authority which granted approval to the vehicle type. This Type Approval Authority may then:
15.1.1Either take the view that the modifications made are not likely to have any appreciable adverse effect and that in any case the vehicle still meets the requirements; or
15.1.2Call for a new report from the Technical Service responsible for the tests.
15.2Communication on confirmation of approval with particulars of the modifications, or of refusal of approval shall be communicated to the Parties to the Agreement applying this Regulation, in accordance with the procedure indicated in paragraph 13.3. above.
15.3The Type Approval Authority issuing the extension of approval shall assign a series number to each communication form drawn up for such an extension.
16Conformity of production
The conformity of production procedures shall comply with those set out in the 1958 Agreement, Schedule 1 (ECE/TRANS/505/Rev.3) with the following requirements:
16.1A vehicle approved under this Regulation shall be so manufactured as to conform to the type approved by meeting the requirements set forth in paragraph 14. above.
16.2The Type Approval Authority which has granted type approval may at any time verify the conformity control methods applied in each production facility. The normal frequency of these verifications shall be once every two years.
17Penalties for non-conformity of production
17.1The approval granted to a vehicle type pursuant to this Regulation may be withdrawn if the conditions set forth in paragraph 16.1. above are not complied with, or if the vehicle fails to pass the checks referred to in paragraph 16.2. above.
17.2Should a Party to the Agreement applying this Regulation withdraw an approval which it has previously granted, it shall forthwith notify the other Contracting Parties applying this Regulation by means of a copy of the approval from bearing at the end in large letters the statement, signed and dated: "APPROVAL WITHDRAWN"
18Production definitively discontinued
18.1If the holder of the approval completely ceases to manufacture a vehicle type approved in accordance with this Regulation, he shall so inform the authority which granted the approval. Upon receiving the relevant communication that authority shall inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of a communication form conforming to the model in Annex 1B to this Regulation.
19Names and addresses of Technical Services responsible for conducting approval tests and of Type Approval Authorities
The Contracting Parties to the 1958 Agreement applying this Regulation shall communicate to the United Nations Secretariat the names and addresses of the Technical Services responsible for conducting approval tests and of the Type Approval Authorities which grant approval and to which forms certifying approval or extension or refusal or withdrawal of approval, issued in other countries, are to be sent.
Annex 1A
Section II
2.1For tonal sound A-weighted sound pressure level, dB(A) For broadband sound from 400 Hz to 10 kHz A-weighted sound pressure, dB(A) For 1/3 Octave Band Sound in between 400 Hz and 4 kHz 1/3 A-weighted sound pressure level in dB(A) Japan proposes the same limit values for all sound type. Sound level should be overall level.
Annex 1B
Section II
2.2For tonal sound A-weighted sound pressure level, dB(A) For broadband sound from 400 Hz to 10 kHz A-weighted sound pressure, dB(A) For 1/3 Octave Band Sound in between 400 Hz and 4 kHz 1/3 A-weighted sound pressure level in dB(A) Japan proposes the same limit values for all sound type. Sound level should be overall level.
Annex 1B
Appendix 1
0.10 0.11 0.12 1. 1.2 1.3 1.4All of "(s)" in the text.
Annex 4
B.This section is about "Dual horn". All of texts in this section are unnecessary.