Regulations, Guidelines & Policies

CDOT Noise Analysis & Abatement Guidelines

CDOT’s Noise Analysis and Abatement Guidelines was most recently published on January 15, 2015. Section 4.0 of Appendix C was updated on November 3, 2015. The following documents make up the current CDOT Noise Analysis and Abatement Guidelines:

• Noise Analysis and Abatement Guidelines
• Form 1209: Noise Abatement Determination Worksheet, Version 2/15
• CDOT's Traffic Noise Technical Report Template (April 2018, Version 1) 
  • (note: this must be used for projects with Scoping Date on or after July 1, 2018)*
• CDOT Noise Guidance Update Re: Long-Term Monitoring
• CDOT Noise Guidance Update Re: Non-CDOT, Non-Federally Funded Noise Barriers on State Highway Right-of-Way

Federal Noise Regulation 23 CFR 772
CDOT Roadside Design Manual, Chapter 18 - Noise
FHWA's Highway Traffic Noise: Analysis and Abatement Guidance, December 2011
FHWA's Measurement of Highway-Related Noise, May 1996
Colorado Revised Statutes Title 25 Health Section 25-12-103, Maximum permissible noise levels
FHWA's highway traffic noise website