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

1,516 Accredited labs

17 Countries

Showing 26–28 of 28 labs

TÜV NORD Nederland

RvA I167 Son En Breugel, NL

DIN EN ISO 17232 DIN EN 14960 NEN 3140 #EN ISO 5164:14 EN 1069 + 3 more

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UL TS

RvA L662 'S-Gravenhage, NL

IEC 18045 IEC 15408-1

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VSL

RvA K999 Delft, NL

HCS LF 1 1 HCS LF 2 1 HCS LF 1 3 HCS LF 12 HCS LF 22 + 3 more

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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
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