Illinois Department of Transportation, Erica Borggren, Acting Secretary
Patrick J. Quinn, Governor
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Part I Noise Fundamentals

Part II Noise Analysis

Part III Noise Abatement

Frequently Asked Questions

Glossary and Acronyms

Roadway Layout


  • The roadway layout along with roadway width (typically number of lanes x 12-foot width) is input into the model.

  • Each direction of traffic is input.


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