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
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DIN EN ISO 3095
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BS EN ISO 3095
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NF EN ISO 3095
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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
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BS EN ISO 14837-1
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NF EN ISO 14837-1
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UNI EN ISO 14837-1
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UNE EN ISO 14837-1
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NEN EN ISO 14837-1
1,273
Accredited labs
15
Countries
Showing 526–550 of 714 labs
UL International Germany
Active
IEC 61851-1: 2010
IEC 61851-23
IEC 62109-1
IEC 62109-2
IEC 61010
+ 3 more
UNIMA Präzisionsmaschinen
Active
Messschieber für 0 mm
Außen-, Innen- und
Bügelmessschrauben 0 mm
Messuhren mit
Feinzeiger
+ 3 more
Achromatopsie (Panel) (ATF6, CNGA3, CNGB
Albinismus (OCA2)
Alport-Syndrom (Panel) (COL4A1, COL4A3,
Amyloidose (Panel) (APOA1, APOA2, APP, B
Arrhythmien (Panel) (ACTC1, ACTN2, BAG3,
+ 3 more
DIN EN 442-2
DIN EN 16430-1
DIN EN 16430-2
DIN EN 16430-3
DIN 4703-3
+ 3 more
Sound power — engineering method using a
Sound power — survey method (ISO 3746)
Sound power — in-situ using reference so
Sound intensity — scanning method (ISO 9
Sound intensity — scanning method part 2
+ 3 more
Universitätsklinikum Aachen AöR (Uniklinik RWTH Aachen) Institut für Humangenetik und Genommedizin
Active
Syndrom/Silver-Russell-Syndrom)
SMN1 (SMA)
FMR1-Gen (fraX, POF, FXTAS)
Charcot-Marie-Tooth-Erkrankung
Cardiolipin (CMT)
+ 3 more
Adrenalin
Dopamin
5-Hydroxyindolessigsäure
Homovanillinsäure
Noradrenalin
+ 3 more
Universitätsklinikum Aachen AöR (Uniklinik RWTH Aachen) Zentrum für Humangenetik und Genommedizin
Active
(Long Read): SNV, CNV, Repeats
FMR1-Gen (fraX, POF, FXTAS)
Charcot-Marie-Tooth-Erkrankung
Cardiolipin (CMT)
GARS1, GDAP1, GJB1, HSPB1, IGHMBP2, LITA
+ 3 more
Leukozyten (WBC)
Erythrozyten (RBC)
Hämatokrit (HCT)
MCV
Thrombozyten
+ 3 more
Thrombozytenaggregation
Agonisten: ADP, ADP-PGE1,
heparininduzierter Antikörper
Heparin induzierter Thrombozytopenie
Typ II (HIT II)
+ 3 more
Bannayan-Ruvalcaba-Riley-Syndrom
(institutseigene Erweiterung des
Illumina TruSight Cancer Panel):
PTEN, AKT1, PIK3CA, SEC23B
Syndrom (institutseigene
+ 3 more
Universitätsklinikum Bonn Institut für Klinische Chemie und Klinische Pharmakologie - Zentrallabor
Active
Amiodaron, Desethylamiodaron
HbA1c
Vitamin A, Vitamin E
Vitamin B1/B6
Vitamin B2
+ 3 more
angeborener Chromosomensatz
Nummerische Veränderungen
Chromosomen 13, 18, 21, X und
ldentifizierung kleinster
chromosomaler/numerischer
+ 3 more
Multiplate-Analyse (TRAP, ADP)
Thrombozytenaggregation
Born)
Organische Säuren (Profil)
Metanephrin, Normetanephrin
+ 3 more
Blutbild, Differentialblutbild
Differentialblutbild
Fragmentozyten
Knochenmarkzytologie
Liquor- und Ergusszytologie
+ 3 more
Familiärer Brust- und Eierstockkrebs
(TruRiskGenePanel des Deutschen
Konsortiums Familiärer Brust- und
Eierstockkrebs)
(ATM, BARD1, BRCA1, BRCA2, BRIP1, CDH1,
+ 1 more
Cyclosporin
Everolimus
Sirolimus
Cyclosporin A, Everolimus, Sirolimus, Ta
Vitamin A
+ 3 more
Pilze (Dermatophyten, Schimmelpilze, Spr
Mykobakterien
anaerobe Bakterien, anspruchsvolle
Schnellwachsende aerobe
Cefinase-positive Bakterien
+ 3 more
Azoospermie (AZFa,b, c Deletionen)
Huntington (HTT)
Fra(X)-Syndrom, FXTAS (FMR1)
Familiärer Brust- und Eierstockkrebs
(ATM (NM_000051), BRCA1
+ 3 more
Thrombozytenaggregation
ASPI, COL, RISTO, TRAP)
Steroide Profil
11-Deoxycortisol
11-Deoxycorticosteron
+ 3 more
Interleukin 23 Rezeptor
HLA-B27
HLA-A-Locus
HLA-B-Locus
HLA-C-Locus
+ 3 more
Amitriptylin
Bromazepam
Chlordiazepoxid
Clobazam
Clomipramin
+ 3 more
Aspergillus fumigatus AK
Brucella spp.- Ak
Candida spp. - Ak
Cardiolipin AK
Cryptococcus neoformans
+ 3 more
maschinelles Blutbild
maschinelles Differentialblutbild
DRVVT, Lupus Antikoagulantien
Protein S (Aktivität)
Exogene Gerinnungsfaktoren
+ 3 more
Mycoplasma pneumoniae-DNA
Bordetella pertussis- DNA
Legionella pneumophila-DNA
HIV-1, 2, Ak, Bestätigungstest
Adenovirus IgA-Ak
+ 3 more
No matching labs found.