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
1,516
Accredited labs
17
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Showing 701–725 of 1,516 labs
Kordt Messtechnik
Active
(ein- und mehrgängige
zylindrische Außen- und
geradlinigen Flanken und
symmetrischem Profil sowie
positiven Flankenwinkeln)
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Kordus Consulting
Active
and Appendix 3 of HSG 227 (2004))
Appendix 5 of HSG 227 (2004))
Kova Asbestos Consultants
Active
(HSG 248) – 2021
(PCM) based on HSG 248
SAS 02 based on HSG 248
Kovia
Active
Appendix 5 of HSG 227 (2004))
HSG 227 (2004)
HSG 264 (2012) and Appendix 3 of
Thrombozytenfunktion
Amiodaron/Desethylamiodaron
Cotinin
Cyclosporin A
Everolimus
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Albumin
Alkohol
ALP
Anti-Faktor Xa (Fragmin)
AT3
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Durchfluss von Gasen 17 mL/s
transferstandards
Strömungswiderstand 5 mL/min
15,0 mL/min
Laminar Flow Elemente 17 mL/min
+ 3 more
Messschieber für Außen-, 0 mm
Innen- und Tiefenmaße
> 300 mm
Tiefenmessschieber 0 mm
Höhenmessschieber 0 mm
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LAB (UK)
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(HSG 248) – 2021
(PCM) based on HSG 248
MAAM 05 based on HSG 248
(HSG 264, 2012)
LAB-EXPERT
Active
NF X43-050 (parties utiles de la
NF X 43-050
NF ISO 22262-1 (parties utiles
LABAQUA, S.A. (Unipersonal)
Active
UNE-EN ISO 27888
SM 2540
UNE-EN ISO 8467
UNE-EN ISO 7027-1
UNE-EN ISO 10523
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LABOCEA - Site de Brest
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DIN EN 13346
CEN / TS 14235
NF T 90-412
DIN EN ISO 7899-1
DIN EN 12880
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AOAC 995.11
UNE EN ISO 6869
AOAC 985.35
UNE-EN 17298
DIN EN ISO 17294-2
DIN EN ISO 14403-2
DIN EN ISO 10304-1
NF-T 90-101
NF T90-015-1
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NF V08-106
NF T 90-412
NF EN ISO 7887 –
VDE 414-9-11
DIN EN ISO 7899-1
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DIN ISO 11466
NF X31-120
DIN EN ISO 11885
NF X31-147
DIN EN 16175-1
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NF V08-401
DIN EN ISO 6888-2
DIN ISO 16649-2
BS ISO 15214:1998
NF V08-409
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LABORATOIRE ECCI
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DIN EN 10002-1
ASTM E8/E 8M
ASTM A 370
NF EN ISO 6892-1 (méthodes A1, A2 et
DIN EN 2002-001
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LABORATOIRE ICARE
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ISO 14698-1
DIN EN ISO 17141
DIN EN 12469
DIN EN ISO 11138-2
DIN EN ISO 11737-2
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DIN EN 13624
DIN EN 13727
DIN EN ISO 11930
DIN EN 17387
DIN EN ISO 22717
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LABORATOIRE LHYAL
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NF V 04-407
DIN EN ISO 6888-1
NF V04-403
0.95) based on BS ISO 21527-2:2008
DIN EN ISO 6888-2
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LABORATOIRES POURQUERY
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DIN EN 10002-1
BS ISO 9227:2022
DIN EN ISO 643
EN ISO 12624
DIN EN 10045-1
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UNE 77324
ISO 23318
UNE 77325
ISO 10390
UNE 77308
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DIN EN 15634-1
DIN EN ISO 15587-1
NF EN ISO-15587-2
ISO 14189
EPA 5030
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