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

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DAkkS D-K-22359-01-00 Oberursel, DE
Wechselstromstärke 5 mA 5 mA, 10 mA, 20 mA 40 mA, 80 mA, 150 mA 240 mA, 300 mA, 480 mA 600 mA, 720 mA, 960 mA + 3 more
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DAkkS D-K-23094-01-01 Eisingen, DE
Außengewinde Nenndurchmesser zylindrische Innengewinde − Längenmessgeräte Längenmessmittel Länge + 3 more
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DAkkS D-PL-22057-01-01 Ludwigsburg, DE
DIN EN ISO 4210-1 DIN EN ISO 11243 ISO 5775-1 DIN EN 16054 DIN EN 1371-1 + 3 more
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DAkkS D-ML-13013-01-00 Chemnitz, DE
Thrombozytenfunktion Ristocetin) Thrombozytenaggregation Arachidonsäure, Epinephrin, Kollagen, Ri 17-alpha-Hydroxy-Progesteron + 3 more
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DAkkS D-ML-13117-01-00 Regensburg, DE
angeborener Chromosomensatz 22q11.2-Mikrodeletionssyndrom (22q11.2) Kopienzahlveränderungen (Regionen laut MLPA-Kit) + 3 more
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DAkkS D-K-15186-01-01 Bitterfeld-Wolfen, DE
- Gleichspannung Railway vehicles — specific test require Quellen - Gleichstromstärke / Messgeräte + 3 more
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DAkkS D-K-15186-01-02 Bitterfeld-Wolfen, DE
Masse oder Konventioneller Wägewert/ Massenormale* Massenormale* > 100 g + 3 more
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DAkkS D-ML-13153-01-00 Jena, DE
Angelmann-Syndrom (15q11-q13 Region) Prader-Willi-Syndrom (15q11-q13 Ausschluss/ Nachweis mütterlicher Zellen im pränatalen + 3 more
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DAkkS D-K-18080-01-00 Friedrichshafen, DE
Parallelendmaße 0,5 mm DIN EN ISO 3650:1999 Parallelendmaße * 0,5 mm Parallelendmaße Parallelendmaße > 100 mm + 3 more
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DAkkS D-K-19937-01-02 Losheim am See, DE
Railway brake — anti-slide device (UIC 5 Messgeräte im Kraftfahrwesen − Rollenbremsprüfstände − Plattenbremsprüfstände − Scheinwerfer-Einstell-Prüfsystem + 3 more
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ZwickRoell

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DAkkS D-K-18351-01-00 Ulm, DE
Absolutdruck p * Kraftmesseinrichtungen von Werkstoffprüfmaschinen Acoustics — tonality assessment (DIN 456 Auflagekraft von Fallmassen + 3 more
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DAkkS D-ML-13280-01-00 Hamburg, DE
Thombozyten-Funktionstest 10-OH-Carbazepin 11-Deoxycorticosteron 11-Deoxycortisol 21-Deoxycortisol + 3 more
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DAkkS D-ML-13432-01-00 Würzburg, DE
Automatisches Blutbild Erythrozytenzahl Hämatokrit Hämoglobin Hb im einzelnen Erythrozyten + 3 more
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DAkkS D-ML-13131-02-01 Hannover, DE
HbA1c Basophile Eosinophile Basophile Granulozyten Lymphozyten + 3 more
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DAkkS D-ML-13131-01-01 Göttingen, DE
Homovanillinsäure Vanillin-Mandelsäure 5-Hydroxyindolessigsäure VLCFA Phytansäure + 3 more
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DAkkS D-ML-20928-01-01 Jena, DE
Albumin Alkalische Phosphatase Alpha-Amylase AT3 Bilirubin, direkt + 3 more
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DAkkS D-ML-13318-01-00 Halle (Saale), DE
HbA1c CDT Vitamin B1 Vitamin B6 Vitamin A + 3 more
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DAkkS D-ML-18746-01-01 Fürstenfeldbruck, DE
HbA1c Basophile Granulozyten Eosinophile Granulozyten Erythrozyten Hämoglobin + 3 more
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DAkkS D-ML-20700-01-00 Hamburg, DE
Thombozyten-Funktionstest 10-OH-Carbazepin 11-Deoxycorticosteron 11-Deoxycortisol 21-Deoxycortisol + 3 more
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DAkkS D-PL-17580-01-00 Reppenstedt, DE
IEC 61400-1 * IEC 61400-12-1 Ed. 2.0 * IEC 61400-12-1 * IEC 61400-50 * IEC 61400-50-1 * + 2 more
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bactologicum

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DAkkS D-PL-22114-01-01 Hamburg, DE
DIN EN 1040 DIN EN 1275 2006-03 IEC 60127-6 DIN EN 12791 2018-01 DIN EN 13624 2022-08 + 3 more
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DAkkS D-ML-13188-01-01 Limburg a. d. Lahn- Eschhofen, DE
Lysozym = Sexualhormon bindendes Prolaktin Freies Thyroxin 4 (FT4) Beta-Defensin 2 + 3 more
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DAkkS D-K-15019-01-01 Landkreis Fürstenfeldbruck, DE
Hochspannung - Wechselspannung Bereiche Rechteckspannung Amplitudenparameter + 3 more
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eumetron

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DAkkS D-K-15151-01-01 Aalen, DE
− Durchmesser − Parallelendmaße − Formabweichung − Strichmaße, Abstände − Virtuelle Koordinatenmessgeräte + 3 more
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DAkkS D-PL-14078-01-03 Wesseling, DE
DIN 19698-1 DIN 19698-2 DIN ISO 11464 DIN EN ISO 54321 DIN EN 12457-4 + 3 more
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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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