This guide was updated in February 2017.
Project-level conformity determinations must be made for Federal highway and transit projects to demonstrate that the project is reflected in a conforming metropolitan transportation plan and TIP. Additionally, as part of these project-level determinations, in carbon monoxide and particulate matter nonattainment and maintenance areas, localized analysis requirements apply for Federally-funded or approved projects. This analysis is called "hot-spot" analysis.
Exhibit 5 shows a simplified version of the transportation conformity process for metropolitan transportation plans/TIPs and projects.
Transportation Conformity Process for Metropolitan Transportation Plans/TIPs |
Transportation Conformity Process for Projects |
Shading denotes key interagency consultation points | *Does not apply to donut or isolated rural areas |