Transportation Conformity Guide Available
understanding the intersection of transportation conformity and investments


The Federal Highway Administration (FHWA) has updated their guide, “Transportation Conformity, A Basic Guide for State & Local Officials.”

The purpose of this guide is to help State and local officials understand transportation conformity and how conformity requirements relate to transportation investments in their communities. It discusses the implications of conformity on metropolitan transportation plans, transportation improvement programs (TIPs), and transportation projects,  and provides an overview of the major elements of the conformity process.   Exhibits illustrating key elements of the conformity process are also provided as well as discussions on the health effects of pollutants and how to reduce on-road mobile source emissions.

View the updated Guide