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The limits for pass-by noise are defined at a distance of 25 m from the centreline of the reference track, 3,5 m above the upper surface of the rails for a vehicle speed indicated in Table 18 below. The indicator for the A weighted equivalent continuous sound level is LpAeq,Tp.
The measurements shall be carried out in accordance with EN ISO 3095:2005 with deviations stated in Annex N1.3 and N1.4.
The test train shall consist of:
In the case of a trainset, the trainset itself
In the case of locomotive, the locomotive to be tested plus four coaches. The pass-by noise of these four coaches LpAeq,Tp measured at 7,5 m from the track centre 1,2 m above the top of rail and at 200 km/h on the reference track shall not exceed 92 dB (A). Alternatively two locomotives of the same type and 8 coaches are permitted to be used in any configuration
In the case of coaches, the four coaches to be tested plus one locomotive. The pass-by noise of the locomotive LpAeq,Tp measured at 7,5 m from the track centre 1,2 m above the top of rail and at 200 km/h on the reference track shall not exceed 97 dB (A). Alternatively two locomotives of the same type and 8 coaches are permitted to be used in any configuration.
The two latter cases are defined as a ‘variable formation’ in this section.
The limiting values for the noise emission of the full test train LpAeq,Tp at 25 m 3,5 m above top of rail are given in Table 18.
Limiting values LpAeq,Tp for the pass-by noise of rolling stock
Rolling stock | Speed [km/h] | ||||
---|---|---|---|---|---|
200 | 250 | 300 | 320 | ||
Class 1 | Trainset | 87 dB(A) | 91 dB(A) | 92 dB(A) | |
Class 2 | Trainset or variable formations | 88 dB(A) |
A margin of 1 dB(A) is accepted on the values given in table 18
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