Moving Ahead for Progress in the 21st Century Act (MAP-21) and the Fixing America's Surface Transportation (FAST) Act required performance measures for State Departments of Transportation (State DOT) and Metropolitan Planning Organizations (MPO) to assess traffic congestion and on-road mobile source emissions for the purpose of carrying out the Congestion Mitigation and Air Quality Improvement (CMAQ) Program.
Easily access the applicability tables.
Under 23 CFR Part 490 (§ 490.707 and § 490.807), the US DOT established three performance measures for assessing the CMAQ program. These three measures are shown in the table below.
Subpart G: Traffic Congestion Measures |
PHED Measure: Annual Hours of Peak Hour Excessive Delay (PHED) Per Capita1 |
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Non-SOV Travel Measure: Percent of Non-Single Occupancy Vehicle (SOV) Travel |
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Subpart H: On-Road Mobile Source Emissions Measure |
Emission Reductions Measure: 2- and 4-year Total Emission Reductions for each applicable criteria pollutant and precursor |
This page is intended to provide information for State DOTs and MPOs and the public about meeting the requirements for CMAQ performance management.
CMAQ 101: Introduction to the CMAQ Program (video, 22:26) – Introduction and overview of the CMAQ Program
National Highway Institute (NHI) On-Road Mobile Source Emissions Reduction Measure (web-based training, 45-1hr) – Covers TPM in general, CMAQ term definitions, explanation of emissions measure, applicability, data sources, formula, targets, reporting, due dates, and MPO CMAQ Performance Plan
TPM Implementation workshop materials
TPM "Office Hours" website
Demonstration of Performance Management Form (PMF) for Baseline Reporting (video, 13 minutes) – Walks through steps for filling out baseline PMF.
Overview of Emissions Measures (on-demand webinar, 21 minutes)
1 For information related to the PHED measure, please see the FHWA Office of Operations Performance Measurement Website (link).
2 https://factfinder.census.gov/faces/nav/jsf/pages/index.xhtml