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
Countries
Showing 476–500 of 1,273 labs
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
IEC 61000-3-2: 2014
UNE-EN IEC 61000-3-2
UNE-EN 61000-3-2
UNE-EN IEC 61000-6-4
IEC 61000-3-3
+ 3 more
(380 - 780 nm) 1 < R ≤ 100
0,01< DO ≤ 0,1 0,1 < DO ≤ 0,3 1,1 < DO <
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
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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
+ 3 more
DC Resistance
DC VOLTAGE
Temperatur-Simulation
AC CURRENT
Base metal thermocouples
+ 3 more
ASTM D3338
ASTM D 2624
ASTM D 5006
ASTM D 2386
ASTM D7153
+ 3 more
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
+ 3 more
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
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DIN 38402-A 12
DIN ISO 5667-5 (A 14)
DIN EN ISO 5667-6 (A 15)
DIN EN ISO 19458 (K 19)
DIN 19643-1
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Basophile Granulozyten
Eosinophile Granulozyten
Erythrozyten
Lymphozyten
Leukozyten
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DIN EN ISO 1460
DIN EN ISO 2178
DIN EN ISO 2360
DIN 50905-1
DIN 50905-2
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ISO 2178
ISO 4892-2: 2013-03
UNE-EN ISO 11998
BS EN ISO 16474-3:2021
ISO 6270-1
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Bacillus anthracis Antikörper
Direkter Coombstest polyvalent
Brucella spp. IgG, IgM Antikörper
Francisella tularensis-Antikörper
polyvalent, IgG, IgM
+ 3 more
CalTeC
Active
Kurzschlussstrom 0,5 mA
0,1 V
Füllfaktor Solarzellen* 25 %
0,01 mW
THD U 0,1 %
+ 3 more
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