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
🇮🇹
UNI EN ISO 14837-1
🇪🇸
UNE EN ISO 14837-1
🇳🇱
NEN EN ISO 14837-1
1,516
Accredited labs
17
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Showing 301–325 of 1,516 labs
CryptoNet Labs Srl
Active
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
+ 3 more
DIN EN ISO 9012
ISO 22967
ISO 22968
(SPG42), SPAST (SPG4), SPG11, SPG7, VAMP
DIN EN 30-1-1
+ 3 more
DECOM-UGK Werkzeugtechnik
Active
(ein- und mehrgängige
zylindrische Außen- und
metrischem Profil)
Außengewinde Nenndurchmesser
Flankendurchmesser 1 mm
+ 3 more
DEKRA Automobil
Active
DIN EN ISO 5667-3
DIN EN ISO 15587-2
DIN EN 12457-4
DIN EN 13346
DIN EN 13657
+ 3 more
DEKRA Certification
Active
DIN EN 60076-3
DIN EN 60076-10
DIN EN 60076-1
DIN EN 60076-4
DIN EN 60076-11
+ 3 more
UNE-EN 13284-2
UNE-EN 15259
UNE-EN 13284-1
UNE ISO 9096
UNE-EN 14181 (1)
+ 3 more
IEC 60335-1: 2010
IEC 60335-2-2
IEC 60335-2-3
DIN EN 60335-2-3: 2002
IEC 60335-2-4
+ 3 more
IEC 61730-2
IEC 61215-1-2
IEC 61215-2
IEC 61215-1-3
IEC 61215-1-4
+ 3 more
- Gleichspannung
Messgeräte > 330 mV
> 3,3 V
> 33 V
> 330 V
+ 3 more
Gas pressure (absolute)
Gas pressure (gauge)
Hydraulic pressure (gauge)
Hydraulic Pressure (absolute)
PRESSURE (cont’d)
+ 1 more
DIANOVIS
Active
Kleines Blutbild (maschinell)
Differentialblutbild (maschinell)
Thrombozyten
Retikulozyten
Natriumchlorid
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DILLINGER FRANCE
Active
NF EN ISO 6892-1 (méthode
DIN EN 10164
ASTM E 8
ASTM A 370
DIN EN ISO 6508-1
+ 3 more
Gleichspannung 10 mV
Quellen > 100 mV
> 1 V
> 10 V
> 100 V
+ 3 more
ASTM C 1166
IEC 60512-16-7
ID168
IEC 60512-16-9
AK gegen Sc1-70
+ 3 more
SM 5210 D
UNE-EN ISO 27888
SM 5220 D
SM 2130 B
UNE-EN ISO 11885
+ 3 more
DKMS Life Science Lab g
Active
Antikörper FILA-Klasse I
Lymphozytäre Kreuzprobe
E, -DRB1, -DQB1, -DPB1, DRB3/4/5, -DQA1,
KIR
MICA, MICB, CCR5832
+ 3 more
DM Calibration
Active
LENGTH
Blade type
Straight edges
Surface plates
External micrometer
+ 3 more
ID136
> 140
DIN EN 143
DIN EN ISO 21149
DIN EN 13274-1
+ 3 more
HLA-Typsierung (HLA-B*27)
Azoospermiefaktor
(AZFa/AZFb/AZFc)
Chorea Huntington (HTT)
OMIM# 143100
+ 3 more
DNKA
Active
staining based on HSG 248.
(PCM) based on HSG 248
(HSG 248) – 2021
QSOP 03 based on HSG 248
QSOP 01 based on HSG 248
No matching labs found.