Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Outdoor Ambient Sound Pressure Levels

Outdoor ambient sound pressure levels (dBA) in rural and urban business and industrial environments with or without limited traffic.

Sponsored Links

In residential areas most noise comes from transportation, construction, industrial, and human and animal sources. Road traffic noise is the major source of noise.

The noise can be highly variable. It is common that Day-Night sound levels - Ldn - in different areas may vary a range of 50 dB. The outdoor level - Ldn - in a wilderness areas may occur as low as 30-40 dBA compared to 85-90 dBA in a urban areas. Most urban dwellers lives in areas of Ldn more than  48 dBA

The table below indicates common outdoor sound pressure levels in rural and urban environments at the different octave bands.

Outdoor Sound Pressure (dB)
ConditionsOctave Band Center Frequency (Hz)
Rural, no nearby traffic of concern 42 37 32 27 22 18 14 12
Suburban, no nearby traffic of concern 47 42 37 32 27 23 19 17
Urban, no nearby traffic of concern 52 47 42 37 32 28 24 22
Business or commercial area 57 52 47 42 37 33 29 27
Business or commercial area 62 57 52 47 42 38 34 32
Industrial or manufacturing area 67 62 57 52 47 43 39 37
Within 300 ft (91 m) of continuous heavy traffic 72 67 62 57 52 48 44 42
Sponsored Links

Related Topics

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

About the Engineering ToolBox!


We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.


This page can be cited as

  • Engineering ToolBox, (2003). Outdoor Ambient Sound Pressure Levels. [online] Available at: [Accessed Day Mo. Year].

Modify access date.

. .


3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

3 30

Sponsored Links