Document ID: chunk:federal_register_of_legislation:F2018L01513:body:0:p16
Version: federal_register_of_legislation:F2018L01513
Segment Type: other
Provision Reference: 
Character Range: 45527–48432

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 warning device(s), audible warning system(s), multiple audible warning system(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.

              14.3.3. The A-weighted sound pressure level emitted by the audible warning device(s), audible warning system(s), multiple audible warning system(s) fitted on the vehicle shall be measured at a distance of 7.00 ± 0.10 m in front of the vehicle (see figures in Annex 5), which is being placed on an open site[6], on flat concrete or asphalt surface.
14.3.4. The 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;

14.3.6. The 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.

              15. Modification and extension of approval of the vehicle type
15.1. Every 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:

15.1.1. Either 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

15.1.2. Call for a new report from the Technical Service responsible for the tests.

15.2. Communication 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.

15.3. The Type Approval Authority issuing the extension of approval shall assign a series number to each communication form drawn up for such an extension.

              16. Conformity 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:

16.1. A 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.

16.2. The Type Approval Authority which has granted type