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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TÜV SÜD Auto Service

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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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