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
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17
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Showing 1,051–1,075 of 1,516 labs
R-TECH Services
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ÖNORM EN ISO 17637
BS EN ISO 15614-1:2017
ASTM A 370
DIN EN 10080
BS EN ISO 9015-1:2011
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DIN EN ISO 6508-1
ASTM E1019-24
ISO 13320
ISO 6892-2
(BS EN ISO 6892-1: 2019)
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RIO
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Parallelendmaße * 0,5 mm
DIN EN ISO 3650:1999
> 100 mm
> 500 mm
> 550 mm
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RMA Mess- und Regeltechnik
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Durchfluss von Gasen
Volumendurchfluss 50 m³/h
Railway brakes — brake performance (UIC
(Hochdruck Erdgas
5 bis 51 bar)
+ 1 more
ROTA YOKOGAWA
Active
Masse m strömender
− Durchfluss von Flüssigkeiten
Durchfluss von
1) In den CMC sind die erweiterten Messu
Massedurchfluss dm / dt
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Radiomotive
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ETSI EN 301 489-6
DIN EN 61326-2-6
IEC 61326-3-1
IEC 61326-3-2
IEC 60669-2-5
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Ramcare
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DC CURRENT
DC VOLTAGE
thermometer Pt100
ROTATIONAL SPEED
Generate
+ 3 more
Rhopoint Metrology
Active
(Steel and tungsten carbide)
LENGTH (cont’d)
pneumatic tyres (See Note 1)
LENGTH (cont.)
Plain plug gauges (taper)
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Richard L Thomas Associates
Active
(HSG 264, 2012)
HSG 264 (2012) and Appx. 3 of
HSG 227 (2004))
Appendix 5 of HSG 227 (2004))
(HSG 248) – 2021
OP11 based on HSG 248
(PCM) based on HSG 248
OP04 based on HSG 248
Robert Koch-Institut
Active
Salmonellen
Salmonella enterica, Shigellen, Yersinie
Shigellen
Salmonella sv. Paratyphi
Neisseria meningitidis, Listeria
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Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
elektronische Waagen
1) In den CMC sind die erweiterten Messu
DIN EN ISO 12185
DIN EN ISO 3405
DIN EN 13016-1
DIN EN ISO 20884
DIN EN ISO 20846
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Spinocerebelläre Ataxien
Bindegewebserkrankungen: ACTA2, COL1A1,
HD; Chorea Huntington
(Huntingtin-Gen)
Dentatorubrale-Pallidoluysiane
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Rwanda Standards Board
Active
ISO 6222
AM09 based on BS ISO 21527-1:
ISO 6579-1
ISO 4832
ISO 2171
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DIN EN ISO 6507-1
DIN EN ISO 6508-1
NF X70-100-1
DIN EN 45545-2
NF X70-100-2
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Durchfluss von 2 m3/h bis 800 rn3/h
− Durchfluss von Flüssigkeiten
Volumendurchfluss
dV/dt von
strörnenden
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