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 🇬🇧 BS EN ISO 3095 🇫🇷 NF EN ISO 3095 🇮🇹 UNI EN ISO 3095 🇪🇸 UNE EN ISO 3095 🇳🇱 NEN EN ISO 3095 🇩🇪 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
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HCS LF 1 1 HCS LF 2 1 HCS LF 1 3 HCS LF 12 HCS LF 22 + 3 more
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VWR International

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TEMPERATURE parameters and ranges) indicators or recorders WEIGHING INSTRUMENTS
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UKAS 7892 Stoke Prior, GB
Appendix 5 of HSG 227 (2004) (HSG 264, 2012)
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am Standort Vectoflow Windtunnel A, Frie Strömungsgeschwindigkeit von Gasen 15 m/s bis > 38 m/s
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Verein für das Forschungsinstitut für Edelmetalle und Metallchemie Forschungsinstitut Edelmetalle + Metallchemie (fem)

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DIN EN ISO 1463 DIN EN ISO 3497 DIN EN 14518 DIN EN ISO 18452 IEC 62642-3 + 3 more
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Blutbild, kleines (Erythrozyten, Leukozy Erythrozyten Leukozyten Retikulozyten Thrombozyten + 3 more
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UKAS 10213 Bishops Stortford, GB
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(HSG 248) – 2021 (PCM) based on HSG 248 P052 based on HSG 248
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− Permanentes Laboratorium Positionen und Abstände gleichgerichteter Kanten positionen von Strukturen (Hartschichtmasken) + 3 more
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UKAS 7855 Belfast, GB
(HSG 264, 2012)
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WENZEL Metrology

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Koordinatenmessgeräte von <7000 mm under-Edge, UK INCA3D, Software von Inspect 3D, Cholet, F + 3 more
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WIKA Alexander Wiegand SE &

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Positiver und −1 bar bis −0,03 bar Positiver und negativer (ein- oder mehrgängige > −0,03 bar bis > 0,15 bar bis + 3 more
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ACCREDIA 01077 Tribano, IT
IEC 62109-1 IEC 61400-21-1 IEC 62109-2 DIN EN 60598-2-4 DIN EN 60068-2-30 + 3 more
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Waagen-Dienst Kirste

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DAkkS D-K-20130-01-00 Meissen, DE
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Waagen-Jöhnk

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Waagenfachhandel Hilke

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Wagner Umweltgeologie

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DAkkS D-PL-21231-01-00 Marienheide, DE
DIN EN ISO 5667-1 (A 4) * DIN 38402-A 12 * DIN 38402-A 13 * DIN EN ISO 5667-3 (A 21) * DIN 38402-A 30 * + 3 more
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Wehrwissenschaftliches Institut für Werk- und Betriebsstoffe (WIWeB)

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Werth Messtechnik GmbH Kalibrierlabor

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DAkkS D-K-15006-01-00 Gießen, DE
Steuerungssoftware Messvolumen mit einer Werth Messtechnik ≤ 2330 mm GmbH, Gießen, D Werth Messtechnik ≤ 600 mm Werth Messtechnik ≤ 150 mm
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Wessex Power Technology

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UKAS 20481 Winterborne Zelston, GB
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Westenergie Netzservice GmbH Eurotest

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Industries

Railway rolling stock manufacturers Railway operators and fleet managers Occupational health and safety consultants Acoustic and noise control engineering Passenger transport and commuter rail

Related Standards

  • EN ISO 3095 Acoustics — Measurement of noise emitted by railbound vehicles
  • ISO 14837-1 Vibration from rail systems — Part 1: Fundamentals and measurement of vibration in free-field
  • EN 50160 Voltage characteristics of electricity supplied by public electricity networks

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