Examples of using Pass-by noise in English and their translations into Slovak
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Chapter 4 and for which the pass-by noise results are marked‘comparable'.
The measured pass-by noise value LpAeq, Tp(vtest) at 80 km/h shall be normalised to the reference speed of 80 km/h LpAeq, Tp(80 km/h) using formula(1).
Chapter 4 of Decision 2011/229/EU and for which the pass-by noise results are marked‘comparable'.
Where a normalisation of the pass-by noise to a reference speed is required, then this shall be performed before rounding.
If the maximum operational speed of the unit is lower than orequal to 80 km/h, the pass-by noise shall be measured at its maximum speed vmax.
The measured pass-by noise levels shall comply with the values as set out in table 1 when measured on track complying with Appendix A.
Proof shall be provided in the technicalfile that the track data related to the type's pass-by noise measurement were valid during the day(s) of testing, e. g.
Except for locomotives, during the pass-by noise measurements, units shall not be physically loaded beyond what is specified above, e. g.
If the criterion is fulfilled, the acoustic impact of the rail roughness deviations is deemed‘small' andthe measured pass-by noise level is considered to be comparable.
If the simplified evaluation is applied for pass-by noise, the reference-type shall comply with at least one of the following.
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).
If the maximum operational speed vmax of theunit is higher than 80 km/h, the pass-by noise shall be measured at 80 km/h and at its maximum speed.
The measured pass-by noise levels shall comply with the values as set out in table 1 when measured on track complying with Appendix A.
If the maximum operational speed vmax of the unit is higher than 80 km/h andlower than 250 km/h, the pass-by noise shall be measured at 80 km/h and at its maximum speed.
The measured pass-by noise value LpAeq, Tp(vtest) at 80 km/h shall be normalised to the reference speed of 80 km/h LpAeq, Tp(80 km/h) using formula(1).
If beyond the limits of these periods,the same stretch of track is used again for pass-by noise measurements, it is necessary to measure the acoustic roughness or decay rates again.
The measured pass-by noise value at maximum speed LpAeq, Tp(vtest) shall be normalised to the reference speed of 250 km/h LpAeq, Tp(250 km/h) using formula(2).
(‘T') For locomotives with total tractive power of more than 6 000 kW and a maximum axle load ofmore than 25 t the limit values for pass-by noise LpAeq, Tp(80 km/h) in Table 4 may be raised up to 85 dB.
The difference between the corrected pass-by noise level and the measured one is then compared to an acceptance criterion.
In case of a wagon whose parameters remain, compared to the reference type, within the permitted range of Table 7 it is deemed without furtherverification that the unit complies with the limit values on pass-by noise as set out in point 4.2.3.
The indicator for pass-by noise is the A-weighted equivalent continuous sound pressure level LpAeq, Tp measured over the pass-by time at a distance of 7,5 m from the track centreline, 1,2 m above top of rail.
Proof shall be provided in the technicalfile that the track data related to the type's pass-by noise measurement were valid during the day(s) of testing, e.g. by providing the date of last maintenance having an impact on noise. .
The second step pass-by noise limit values for wagons, locomotives, multiple units and coaches(see point 7.2), according to the results of accurate noise measurement campaigns, taking into account in particular technical progress and available technologies for both track and rolling stock and cost-benefit analyses;
If the maximum operational speed vmax of the unit is equal to orhigher than 250 km/h, the pass-by noise shall be measured at 80 km/h and at its maximum speed with an upper test speed limit of 320 km/h.
An upgrading for noise emission reduction only is not mandatory, but if upgrading is done for another reason it has tobe demonstrated that renewal or upgrading does not increase pass-by noise with respect to the performance of the vehicle before renewal or upgrading.