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
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simulation.
parameters and ranges)
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Compli Group
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DC CURRENT
DC Resistance
Oscilloscope Calibration
DC VOLTAGE
CAPACITANCE
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Messgeräte 0,001 V
> 0,22 V
> 2,2 V
> 11 V
> 22 V
+ 3 more
DIN EN 933-11
DIN EN 12390-3
DIN EN 933-3
DIN EN 12390-7
DIN EN 12697-5
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DC CURRENT
LENGTH
DC Resistance
DC VOLTAGE
Cold junction compensation
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Chloride
Potassium
Sodium
Differential Blood Count
White Blood Cell Count
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Corserv Solutions
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DIN EN 933-1
(PCM) based on HSG 248
(HSG 248) – 2021
DIN EN 932-1
DIN EN 932-2
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CryptoNet Labs Srl
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ETSI EN 319 412
ETSI EN 319 401
ETSI EN 319 411-2
ETSI EN 319 411-1
Parallelendmaße * 0,5 mm
DIN EN ISO 3650:1999
auch Vor-Ort Kalibrierung
bahntypischer
–0,26 mm
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DIN EN ISO 9012
ISO 22967
ISO 22968
(SPG42), SPAST (SPG4), SPG11, SPG7, VAMP
DIN EN 30-1-1
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DECOM-UGK Werkzeugtechnik
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(ein- und mehrgängige
zylindrische Außen- und
metrischem Profil)
Außengewinde Nenndurchmesser
Flankendurchmesser 1 mm
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DEKRA Automobil
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DIN EN ISO 5667-3
DIN EN ISO 15587-2
DIN EN 12457-4
DIN EN 13346
DIN EN 13657
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DEKRA Certification
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DIN EN 60076-3
DIN EN 60076-10
DIN EN 60076-1
DIN EN 60076-4
DIN EN 60076-11
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UNE-EN 13284-2
UNE-EN 15259
UNE-EN 13284-1
UNE ISO 9096
UNE-EN 14181 (1)
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IEC 60335-1: 2010
IEC 60335-2-2
IEC 60335-2-3
DIN EN 60335-2-3: 2002
IEC 60335-2-4
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IEC 61730-2
IEC 61215-1-2
IEC 61215-2
IEC 61215-1-3
IEC 61215-1-4
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- Gleichspannung
Messgeräte > 330 mV
> 3,3 V
> 33 V
> 330 V
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Gas pressure (absolute)
Gas pressure (gauge)
Hydraulic pressure (gauge)
Hydraulic Pressure (absolute)
PRESSURE (cont’d)
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