Noise generated by Road Traffic
Estimate noise level generated by traffic.
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Hourly traffic noise level from roads with speed 75 km/h can be indicated from the chart sbelow:
Download and print Noise Level from Traffic chart
Download and print Noise Level from Traffic - Correction for Heavy Traffic chart
Example - Traffic noise from a road
From the first chart the hourly noise level from a road with 100 vehicles per hour and speed 75 km/h can be estimated to
62 dBA
If the percentage of heavy vehicles is 15% the last chart indicates that
3 dBA
must be added.
It can be assumed that the hourly noise level is approximately
62 dBA + 3 dBA = 65 dBA
Note that this level is only an indication. The noise is influenced by speed, standard and types of vehicles, tarmac quality, type of wheels with or without studs - and more.
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Related Topics
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Acoustics
Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.
Related Documents
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Noise - Acceptable dBA Level
Acceptable noise - dBA - level at typical common locations. -
NR - the Noise Rating Curve
The Noise Rating (NR) Curve used to determine acceptable indoor environments for hearing preservation, speech communication and annoyance. -
Outdoor Ambient Sound Pressure Levels
Outdoor ambient sound pressure levels (dBA) in rural and urban business and industrial environments with or without limited traffic. -
Propagation of Outdoor Sound - Partial Barriers
The transmission of outdoor sound through and around barriers - the Fresnel Number. -
Propagation of Sound Outdoors - Attenuation vs. Distance
The propagation of outdoors sound vs. distance and attenuation. -
Vehicles Traffic Flow and Density
Traffic flow and density as used in highway design.
