25 years of FHWA’s Traffic Noise Model (TNM): Part 1 - The History of TNM 

25 years of TNM: As part of the 25th Anniversary of the Traffic Noise Model, we go back in time and hear about noise modeling before TNM and the events leading to the start of TNM. From there, we hear about the past 25 years of TNM, up to the newest model 3.2. We hear some of the behind the scenes story of how TNM got to where it is today. We finished the video by hearing from a couple of states on their experiences with TNM.