DIN 45642 specifies standardized methods for measuring noise immissions from road and rail traffic at receiver locations. This test quantifies sound pressure levels and frequency characteristics of traffic noise in the environment, typically at building facades or sensitive areas. Municipalities, environmental authorities, and transportation agencies require this test to assess compliance with noise limit values and evaluate environmental impact. Accreditation ensures measurements are reproducible, comparable, and defensible in regulatory and legal proceedings. Proper measurement following this standard is critical for noise action planning and protection of public health.
What it measures
Sound pressure level (Leq, LA) from traffic sources
Maximum sound pressure levels (Lmax, LAmax)
Frequency spectrum analysis
Temporal noise characteristics
Compliance with national noise limit values
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DIN EN ISO 3744
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BS EN ISO 3744
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NF EN ISO 3744
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UNI EN ISO 3744
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UNE EN ISO 3744
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NEN EN ISO 3744
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DIN EN ISO 1996-1
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BS EN ISO 1996-1
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NF EN ISO 1996-1
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UNI EN ISO 1996-1
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UNE EN ISO 1996-1
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NEN EN ISO 1996-1
Environmental protection and monitoringUrban planning and infrastructureRailway and road transport operatorsBuilding and real estate developmentPublic health and occupational health
Related Standards
ISO 3744Acoustics – Determination of sound power levels of noise sources using sound pressure
ISO 1996-1Acoustics – Description, measurement and assessment of environmental noise
DIN 45645Fluctuation strength – Calculation and evaluation of noise containing impulses
Scope