Regulations, Guidelines & Policies

CDOT Noise Analysis & Abatement Guidelines

CDOT’s Noise Analysis and Abatement Guidelines was most recently published on October 9, 2020. As a result, the CDOT Traffic Noise Technical Report Template and associated Form 1209 were also updated. These changes are summarized in an update summary document that includes information on applicability of the 2020 vs. 2015 NAAG. These documents are provided in the following bullet list. During the transition, noise analyses that are still required to use the 2015 NAAG will also use the 2018 template and 2015 form. Therefore, they are also provided.

CDOT's Traffic Noise Technical Report Template

Form 1209: Noise Abatement Evaluation Worksheet

Other Resources