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
Countries
Showing 601–625 of 1,516 labs
ISO 16063-21
EN 55016-1-6
CEM EL-025
UNE-EN ISO 376
UNE-EN ISO 7500-1
+ 3 more
UNE-EN ISO 10704
UNE 73350-1
UNE 73311-5
ISO 11665-4
UNE 31010
+ 1 more
IEC 61000-4-13: 2002
DIN EN 50121-3-2
IEC 61000-3-2: 2014
DIN EN 60601-1-2
IEC 61000-3-3
+ 3 more
DIN EN 1040
DIN EN 1656
DIN EN 14561
IEC 60127-6
DIN EN 13727
+ 3 more
CEM ME-003
EURAMET cg-17
CEM ME-010
Ground-borne noise and vibration from ra
UNE-EN ISO 16911-1
+ 3 more
INTERTEK France
Active
DIN EN ISO 1833-6
DIN EN ISO 1833-2
DIN EN ISO 1833-7
DIN EN ISO 1833-1
DIN EN ISO 1833-20
+ 3 more
IEC 62271-1: 2017-07
DIN EN 62271-1
VDE 0671-1
IEC 62271-100: 2021
VDE 0671-100
+ 3 more
DIN EN 1230-1
EN 1230-2
DIN 10955
DIN ISO 8784-1
DIN 54378
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ITC - CNR
Active
DIN EN 14019
EN ISO 1716
IEC 60512-15-2
BS EN ISO 1716:2002
DIN EN 1026
+ 3 more
ITGA NORMANDIE
Active
NF X43-050 (parties utiles de
ISO 22262-1
NF X 43-050
NF X 43-269 - Annexe K
ITS Testing Services (UK)
Active
BS EN ISO 1833-1:2020
And the following parts of ISO 1833
ISO 1833-4:2017/EU Reg. method 2ISO 1833
ISO 1833-3: 2019
ISO 1833-6: 2019
+ 3 more
ASTM D 5443
ASTM D2892 (modified)
ASTM D2503
ASTM D4052 (modified)
ASTM D2887 (modified)
+ 3 more
DC Resistance
DC VOLTAGE
Temperatur-Simulation
AC CURRENT
Base metal thermocouples
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ASTM D3338
ASTM D 2624
ASTM D 5006
ASTM D 2386
ASTM D7153
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ITS Testing Services (UK)
Active
UK 3725 based on ASTM D2163
and BS EN 15984:2011-07
IP 411, ISO 6251
ASTM D6667 mod
ISO 8973 modified
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ISO 6508-1
Charpy impact test (ISO 148-1)
Tensile testing of metallic materials (I
BS EN ISO 9015-2
BS EN ISO 9016:2022
+ 3 more
- Gleichstromwiderstand
/ Messgeräte
Quellen
>100 Ω
> 10 kΩ
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Ingenieurbüro g o e b e l
Active
DIN 56912
DIN EN 12198-1
DIN EN 12198-2
DIN EN 12198-3
DIN EN 60825-1
+ 3 more
Taupunkttemperatur
Railway braking — urban guided transport
Railway vehicle body structural requirem
Railway bogies — wheelsets and bogies st
Elektrische
+ 3 more
ISO 22262-1
NF X 43-050
NF X43-050 (parties utiles de la
ISO 22262-1
NF X 43-050
NF X 43-269 –
NF X43-050 (parties
ISO 22262-1
NF X 43-050
NF X 43-269 –
NF X43-050 (parties utiles de
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