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
🇳🇱
NEN EN ISO 14837-1
1,516
Accredited labs
17
Countries
Showing 1,076–1,100 of 1,516 labs
SARIA
Active
AM-01 based on BS 4401:Part 1:
AM-32 based on BS 4401:Part 4:
AM-03 based on BS ISO 937:2023
AM-04 based on BS ISO
AM-31 based on BS EN ISO
+ 3 more
SATRA Technology Centre
Active
ISO 4931:1986 (withdrawn)
ISO 3759:1984 (withdrawn)
DIN EN 13759
DIN EN 12150-1
DIN EN ISO 15797
+ 3 more
SAVOIE ANALYSES
Active
NF X 31 615 (purge
DIN ISO 17289
ISO 5815-1
EN 13087-2
DIN EN ISO 7027-2
+ 3 more
DIN EN ISO 12966-2
DIN EN 12266-2
DIN EN ISO 12966-4
DIN EN 13656
DIN 30660
+ 3 more
CEM DI-021
CEM DI-004
CEM EL-007
CEM DI-003
CEM DI-008
+ 3 more
EURAMET CG-6
CEM DI-021
CEM DI-004
CEM DI-013
CEM DI-012
+ 3 more
DIN ISO 17289
DIN EN ISO 10523
NF X 31-615 (Uniquement
DIN EN ISO 7393-2
DIN EN 27888
+ 1 more
SGS France EIHT - Evry
Active
NF X 43-264
NF X 43-014
NF X 43-267
DIN EN ISO 15587-2
NF T90-111
+ 3 more
NF X 43-269 - Annexe K
NF X43-050 (parties utiles de
ISO 22262-1
NF X 43-050
NF ISO 22262-1 (parties utiles
DIN ISO 17289
DIN EN ISO 10523
NF X 31-615 (Uniquement
DIN EN ISO 7393-2
DIN EN 27888
+ 1 more
SGS France EIHT - Toulouse
Active
NF X 43-269
NF X 43-269 - Annexe K
NF X43-050 (parties utiles de
ISO 22262-1
NF X 43-050
+ 1 more
SGS Germany
Active
IEC 61000-4-2: 2008
IEC 61000-4-3: 2006
IEC 61000-4-4: 2012
IEC 61000-4-5: 2005
IEC 61000-4-6: 2013
+ 3 more
DIN 51757
ASTM D 4052
DIN EN ISO 12185
DIN EN ISO 3405
DIN EN 13016-1
+ 3 more
SGS INSTITUT FRESENIUS
Active
DIN EN ISO 2639
DIN EN ISO 6507-1
DIN EN ISO 6508-1
DIN EN 10328
DIN 50190-3
+ 3 more
DIN EN 61010-2-010: 2015
DIN EN 60335-2-9
IEC 61000-4-8: 2009
IEC 61010-2-010: 2014
DIN EN 61010-2-101
+ 3 more
SGS United Kingdom
Active
Joint IP/ASTM methods marked
IP 195*ASTM D1078
ASTM D847 by titration
ASTM D848
ASTM D 1353
+ 3 more
SGS United Kingdom
Active
(HSG 248) – 2021
ASB/SOP/OM8 based on HSG 248
(PCM) based on HSG 248
SGS United Kingdom
Active
CHEM014 based on BS 4401
based on BS 4401 Part 4:1970
CHEM018 based on BS 4401
CHEM023 based on BS 4401-
ISO 6579-1
+ 3 more
SGS United Kingdom
Active
Method CBG-M-SOP-027 based on BS EN ISO
AM01 based on BS EN ISO 4833-1:
2) Method CBG-M-SOP-038 based on BS ISO
ISO 10272-2
Method CBG-M-SOP-007 based on BS EN ISO
+ 3 more
SGS United Kingdom
Active
MPV Thrombozytenvolume
Gas meters
Power meter method
LENGTH
Waterdraw Method
+ 3 more
SGS United Kingdom
Active
BS EN 286 - Simple unfired pressure
BS EN 13445 Unfired pressure
BS EN13480 Metallic industrial
BS EN 12953 Shell boilers
BS EN BS EN 12952 Water-tube
+ 3 more
SIANTEC- Silvio Herzog e. K.
Active
Härte (WPM) 80 HBW
und Knoop-Verfahren 150 HV
(Härteskalen HV5 bis HV100)
150 HV
(Härteskalen HV 0,1 bis HV 3)
+ 3 more
No matching labs found.