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
🇩🇪
DIN EN ISO 3095
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BS EN ISO 3095
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NF EN ISO 3095
🇮🇹
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
🇬🇧
BS EN ISO 14837-1
🇫🇷
NF EN ISO 14837-1
🇮🇹
UNI EN ISO 14837-1
🇪🇸
UNE EN ISO 14837-1
🇳🇱
NEN EN ISO 14837-1
1,273
Accredited labs
15
Countries
Showing 51–75 of 1,273 labs
AQRAT
Active
Messschieber für 0 mm
Außen-, Innen- und > 500 mm
> 1000 mm
Tiefenmessschieber * 0 mm
Sondermessschieber 0 mm
+ 3 more
ARGANO ASESORES
Active
UNE-EN 14790
Railway wheel-rail interaction — roughne
BS ISO 15713:2006
UNE-EN 14385
UNE-EN 15058
+ 3 more
AS International Corporation
Active
ISO 5983-1:2005/Cor.1:2008, ISO20483:201
07L.1.07 based on ISO 6865:2001
ISO 712
07L.1.02 based on ISO 6496:1999,
ISO 12966-2
+ 3 more
EURAMET cg-18
CEM Ed
CEM GUIA
CEM TH-001
CEM TH-007
+ 3 more
DIN EN 13864
DIN EN 14808
DIN EN 12235
ISO 2549
ISO 4919
+ 3 more
AIJU
Active
UNE-EN 71-1
ISO 8124-1
ISO 8124-2
ASTM F963-17
(NM_001718: c.1-c.500)
+ 3 more
AITEX
Active
DIN EN ISO 11612
DIN EN ISO 3175-2
ISO 17493
DIN EN ISO 17227
DIN EN ISO 6330
+ 3 more
ITC
Active
UNE-EN ISO 10545-2
UNE-EN ISO 10545-3
ASTM C373
UNE-EN ISO 10545-4
UNE-EN ISO 10545-5
+ 3 more
0 mV ≤ U < 200 mV 0,2 V ≤ U < 2 V 2 V ≤
1 mV ≤ U < 220 mV 0,22 V ≤ U < 2,2 V 2,2
0 mV ≤ U ≤ 100 mV 0,1 V < U ≤ 1 V 1 V <
0 μA ≤ I < 200 μA 0,2 mA ≤ I < 2 mA 2 mA
0 μA ≤ I < 220 μA 0,22 mA ≤ I < 2,2 mA 2
+ 3 more
UNE-EN 772-11
UNE 136029
DIN 4772:1979
DIN EN 16510-2-4
DIN EN 17539
+ 3 more
IEC 15408-1
IEC 18045
IEC 18367
IEC 20543
IEC 20004
AWE
Active
(HSG 248) – 2021
LQP007 based on HSG 248
LQP003 based on HSG 248
(PCM) based on HSG 248
the guidance of GPG 14
PERSONAL DOSE EQUIVALENT:
RESPONSE:
Absolute Calibration
Active
DC Resistance
CFH-Gen, Macula-Degeneration
DC RESISTANCE (continued)
DC VOLTAGE
DC VOLTAGE (continued)
+ 3 more
Acorn Analytical Services
Active
(HSG 248) – 2021
(PCM) based on HSG 248
staining based on HSG 248
(HSG 264, 2012)
Appendix 5 of HSG 227
ISO 11654
BS EN ISO 10140-2:2021
ISO 7171
ISO 354
BS EN ISO 10140-3:2021
+ 3 more
Sound Calibrators
Pistonphones
based:
level
Microphones
+ 2 more
DIN EN ISO 11127-6
DIN EN 13727
1) BS EN ISO 11930:2019+
2) QMIC WI 22, based on BS EN
Taupunkttemperatur
Railway braking — urban guided transport
Temperaturtransmitter
Widerstandssensor *)
–30 °C
+ 3 more
Air Surveys
Active
(HSG 248) – 2021
APP 7 based on HSG 248
(PCM) based on HSG 248
(PCM) based on HSG 248)
APP 15 based on HSG 248
+ 2 more
(HSG 248) – 2021
AEC 1 based on HSG 248
(PCM) based on HSG 248
AEC 6 based on HSG 248
Airbus Defence and Space
Active
- Gleichspannung
/ Messgeräte
1 µV
Quellen
> 1 V
+ 3 more
No matching labs found.