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
🇩🇪
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 26–50 of 799 labs
Aldosteron
11-Desoxycorticosteron
11-Desoxycortisol
17-Hydroxypregnenolon
17-Hydroxyprogesteron
+ 3 more
DIN 19698-1
DIN 19698-2
DIN EN ISO 54321
DIN EN 1744-3
DIN EN 12457-2
+ 3 more
As-Wägetechnik
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
Radiated emissions (CISPR 32)
1) In den CMC sind die erweiterten Messu
Ashcroft Instruments
Active
Absolutdruck p abs 0,015 bar
> 2 bar
> 42 bar
Absolutdruck Pabs
1 bar; 2 bar
+ 3 more
Aspect Quality
Active
DIN 55635
VDE 0468-2-14
VDE 0468-2-1
VDE 0468-2-5
DIN EN 60068-2-30
+ 3 more
Conformity assessment — requirements for
Druckkraftrichtung
Drehmoment 0,01 N∙m
Drehmomentaufnehmer *
Drehmomentmessgeräte *
+ 3 more
DIN 52186
ISO 21527-1
DIN EN ISO 527-3
IEC 61924-2
DIN EN 62233
+ 3 more
BLASY + MADER Gesellschaft
Active
ISO 10381-8
DIN ISO 10381-1
DIN ISO 10381-2
DIN ISO 10381-3
DIN ISO 10381-4
+ 3 more
BP Europa SE Aral Forschung
Active
DIN EN ISO 6246
DIN 53160-1
DIN EN ISO 22854
(LBLS) (OMIM 611105) (c.228-
DIN EN 13016-1
+ 3 more
Bareiss Prüfgerätebau
Active
Sound intensity — scanning method (ISO 9
Messgeräte für die
Härteskale Shore A*
Analoge Anzeige
Railway freight wagon brake system requi
+ 3 more
DIN EN ISO17892-12
DIN 18134
DIN 18122-2
DIN 19698-1
Bax Engineering
Active
Temperaturanzeigegeräte
–100 °C bis
- Direktanzeigende Thermometer
- Thermopaare, Thermoelemente
verwendete Abkürzungen:
Salmonella spp.
Antikörper)
Treponema pallidum (Lues)
Thrombozytäre Antikörper
dysenteriae), Vibrio cholerae
+ 3 more
Echinococcus granulosus
Echinococcus multilocularis
Paragonimus uterobilateralis
Ascaris lumbricoides (IgG)
Brucella spp. (IgG, IgM)
+ 3 more
Vickers hardness test (ISO 6507)
Temperatur *
Temperaturmessgrößen −35 °C
Railway braking — urban guided transport
Temperatur −40 °C
+ 3 more
Hämoglobin
Differentialblutbild
Erythrozyten
Großes Blutbild
Kleines Blutbild
+ 3 more
Okkultes Blut
Großes Blutbild
Kleines Blutbild
Retikulozyten
Thrombozyten
+ 3 more
2C-B
2C-I
3-Hydroxy-Bromazepam
5-Hydroxyindolessigsäure
6-Acetylcodein
+ 3 more
Zelldifferenzierung
Erythrozyten
Großes Blutbild
Hämoglobin
Kleines Blutbild
+ 3 more
Hämoglobin (immunologisch)
CA 125
CA 15-3
CA 19-9
CA 72-4
+ 3 more
Hämoglobin
Natriumchlorid
Kalium
Natrium
Eiweißelektrophorese: Albumin, Alpha-1-G
+ 3 more
10-OH-Carbazepin
11-Deoxycortisol
17-OH-Progesteron
21-Deoxycortisol
25-OH Vitamin D2
+ 3 more
Thrombozytenfunktion
5-Hydroxyindolessigsäure
Adrenalin
Amiodaron, Desmethylamiodaron
Carbohydrate-deficient
+ 3 more
Bioscientia MVZ Labor Saar
Active
Lamotrigin
Metanephrine, Normetanephrine
Erythrozyten
Aripiprazol
Lymphozyten
+ 3 more
Bizerba SE &
Active
IEC 61000-4-2: 2008
IEC 61000-4-3: 2006
IEC 61000-4-4: 2012
IEC 61000-4-5: 2005
IEC 61000-4-6: 2013
+ 3 more
No matching labs found.