Scope
ISO 3381:2013 / EN ISO 3381
Railway Interior Noise Measurement
ISO 3381 specifies standardized measurement procedures for determining sound pressure levels inside railbound passenger and freight vehicles under operating conditions. This test assesses passenger comfort, crew exposure, and compliance with occupational and environmental noise limits within train cabins and compartments. Manufacturers, operators, and occupational health consultants use these measurements to evaluate cabin acoustic quality, design noise control improvements, and ensure regulatory compliance. Accreditation guarantees consistent, defensible interior noise assessments that support both passenger safety and worker health protection.
What it measures
- A-weighted sound pressure level inside vehicle (dB(A))
- Noise levels at driver/operator positions
- Frequency analysis of interior noise (1/3 octave bands)
- Sound exposure level during typical operation
- Noise at passenger seating areas
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DIN EN ISO 3095
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BS EN ISO 3095
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NF EN ISO 3095
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UNI EN ISO 3095
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UNE EN ISO 3095
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NEN EN ISO 3095
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DIN EN ISO 14837-1
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BS EN ISO 14837-1
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NF EN ISO 14837-1
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UNI EN ISO 14837-1
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UNE EN ISO 14837-1
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NEN EN ISO 14837-1
1,273
Accredited labs
15
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Showing 26–50 of 1,273 labs
UNE 10523
UNE 27888
UNE 7027
ISO 15923-1
SM 3500
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UNE-EN ISO 7932
ISO 15213-1
ISO 21528-2
DIN EN ISO 6579-1
ISO 22964
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SM 3111
SM 5220 D
SM 2130 B
SM 2520 B
SM 2510 B
+ 3 more
UNE-EN ISO 8467
SM 4500-H+ B
UNE-EN ISO 7027-1
ISO 15923-1
UNE-EN 25663
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AGRUPA LABORATORIO, S.L.L.
Active
SM 2540 F
SM 2130 B
EPA 8270
UNE-EN ISO 8467
UNE-EN ISO 5815-1
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AGÉNCIA CATALANA DE L´AIGUA
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SM 4500 H+
UNE EN 27888
SM 2130 B
UNE-EN 77059
UNE-EN 1484
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UNE 137001
UNE 49706
UNE-EN ISO 2234
UNE-EN ISO 12048
UNE-EN ISO 2244
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AIP
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Railway brake — anti-slide device (UIC 5
Railway brake — magnetic track brakes (U
Railway brakes — conditions for homologa
Messgeräte im Kraftfahrwesen
− Abgasmessgeräte für Fremdzündungsmotor
+ 3 more
AISICO
Active
DIN EN 1793-5
ASTM E 415 21
DIN EN 14726
DIN EN 1794-1
DIN EN 1794-2
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IEC 61000-4-2: 2008
VDE 0847-4-2
IEC 61000-4-3: 2006
VDE 0847
IEC 61000-4-4: 2012
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AL-PRO
Active
IEC 61400-12-1 *
IEC 61400-12-5 *
IEC 61400-50 *
IEC 61400-50-1 *
IEC 61400-50-2 *
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ALS France – Site de Paris
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NF T 90-412
0.95) based on BS ISO 21527-2:2008
DIN EN ISO 6888-2
DIN EN ISO 16649-3
DIN EN ISO 6888-3
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ALS Laboratories (UK)
Active
on BS 4401:Part 3:1970(1986)
ISO 12966-2
AM/C/108 based on BS EN ISO
BS 684 2.14:2001
BS EN 288-Part 9 :1999
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ALSTOM Transportation Germany GmbH Prüfstelle für eisenbahntypische Prüfungen an Schienenfahrzeugen
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DIN 27201-5
DIN 25043-1
DIN 25043-2
DIN EN 13272
DIN EN 13272-1
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IEC 60068-2-1
IEC 60068-2-2
UNE-EN 60068-2-14
UNE-EN 60068-2-78
IEC 60068-2-6
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APAVE EXPLOITATION FRANCE
Active
DIN EN 14385
ETSI EN 301 489-1 V2.2.3 2019-11
NF X43-551
IS EN 1948-1:2006 2006
DIN EN 14789
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APAVE INSPECTION SPAIN
Active
UNE-EN 14584
UNE-EN 13554
UNE-EN 12819
UNE-EN 12817
UNE-EN ISO 15614-1
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APEC Environmental
Active
QOP03 based on HSG 248
QOP01 based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
CEM DI-002
EURAMET CG-2
CEM DI-014
CEM DI-006
CEM DI-016
+ 3 more
ISO 6059
ASTM D 1209
UNE-EN ISO 8467
SM 4500-NH D 3
UNE 77048
+ 3 more
ISO/IEC 25010
ISO/IEC 25040
ISO/IEC 25012
ISO/IEC 5259-2
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