Document ID: chunk:federal_register_of_legislation:F2021C00509:reg:6:p8
Version: federal_register_of_legislation:F2021C00509
Segment Type: reg
Provision Reference: reg 6 (pt 8/15)
Character Range: 178039–182043

23. Date of report issued by that service ................................................................................................
24. Number of report issued by that service ..........................................................................................
25. Approval granted/refused/extended/withdrawn 2/
26. Position of approval mark on the moped .........................................................................................
27. Place ................................................................................................................................................
28. Date ..................................................................................................................................................
29. Signature ..........................................................................................................................................
30. The following documents, bearing the approval number shown above, are annexed to this
communication
    ...........drawings, diagrams and plans of the engine and of the exhaust or silencing system;
    ...........photographs of the engine and of the exhaust or silencing system;
    ...........list of duly identified components constituting the exhaust or silencing system.
Annex 2

ARRANGEMENTS OF APPROVAL MARKS

Model A
(See paragraph 5.4 of this Regulation)

The above approval mark affixed to a moped shows that the moped type concerned has, with regard to noise, been approved in the Netherlands (E4) pursuant to Regulation No. 63 under approval number 012439. The approval number indicates that the approval was granted in accordance with the reqirements of Regulation No. 63 already included the 01 series amendments.

Model B
(See paragraph 5.5 of this Regulation)

The above approval mark affixed to a moped shows that the moped type concerned has been approved in the Netherlands (E 4) pursuant to Regulations Nos. 63 and 33.1/ The approval numbers indicate that, at the dates when the respective approvals were given, Regulation No. 63 already included the 01 series of amendments and Regulation No. 33 [28]/ has also been amended by the 01 series of amendments.
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Annex 3

METHODS AND INSTRUMENTS FOR MEASURING THE NOISE MADE BY MOPEDS

1. MEASURING INSTRUMENTS

          1.1.                                         Acoustic measurements

          1.1.1.                                   The apparatus used for measuring the sound level shall be a precision sound-level meter of the type described in International Electrotechnical Commission (IEC) publication No. 179 "Precision sound-level meters", second edition.

          1.1.2.                                   Measurements shall be carried out using the "fast" response of the sound - level meter and the "A" weighting also described in that publication .

          1.1.3.                                   At the beginning and end of each series of measurements the sound-level meter shall be calibrated in accordance with the manufacturer's instructions, using an appropriate sound source (e.g. pistonphone).

          1.1.4.                                   If the errors of the sound level meter obtained from these calibrations change by more than 1 dB during a series of measurements, the test shall be considered invalid.

          1.2.                                         Speed measurements

          Engine revolution and the speed of the moped on the test track shall be determined to within +/- 3%.

          2.                                               CONDITIONS OF MEASUREMENT

          2.1.                                         Site

          2.1.1.                                   The test site shall consist of a central acceleration track surrounded by a substantially level test area. The test track shall be level ; the track surface shall be dry and so designed that rolling noise remains low.
          On the test site, free sound field