Evaluation of the Federal Highway Administration's Traffic Noise Model

This report documents a number of issues relative to the Federal Highway Ad ministration's requirement that all state transportation agencies have swit ched to the Traffic Noise Model by April 1, 2000. The Georgia Department of Transportation uses a version of STAMINA that utilizes vehicle noise emiss ion data specific to the state of Georgia. That. model has shown consistent ly close agreement with measured sound levels over several years. This stud y was designed to first compare measured sound levels to data generated by both the Traffic Noise Model and STAMINA at the same location. After the me asurement data were analyzed, both models were used to design four noise ba rriers on I-475 in Macon, Ga.