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Department of Transportation |
EPA Goal 1: Climate Change and Improving Air Quality |
Purpose
The FHWA has undertaken a PM Research Program to determine the contribution of mobile sources
to PM emissions and to quantify this relationship as accurately as possible. This is important
since areas designated as nonattainment must develop plans for reducing their emissions.
PM is one of the air quality criteria pollutants outlined in the Clean Air Act that are
generated, in part, by motor vehicles. PM has gained interest since it is a significant
pollutant coming from diesel vehicles which are critical to both the transit and
transportation freight industries. Another distinction between PM and the other
criteria pollutants is that one form of PM, (DPM), has been identified as a
probable carcinogen and listed as an "air toxic" compound by EPA.
The AP-42
emissions factor for Paved Roads is one component of the High Priority Research
Topic. The second and third highest priority research programs is the Modeling
to: 1) Evaluate hot-spot models and 2) Develop and evaluate PM emissions models.
The AP-42 Paved Roads emissions factor is part of the MOVES model developed by
OTAQ and required for all transportation conformity plans.
Source(s) of Information
1. DOT: The FHWA Particulate Matter (PM) Program
Related EPA Program(s)
Research: Air, Climate and Energy:
The Air, Climate and Energy (ACE) Research Program promotes innovative, sustainable, and integrated solutions to air pollution
and climate change. For example, the ACE Program provides research to EPA’s programs to improve public health and the
environment, increase life expectancy, and protect the most susceptible populations. ACE provides models and tools
necessary for policy makers at all levels of community and government to make the best decisions.
ACE’s integrated research supports the Agency’s implementation of the Clean Air Act (CAA), especially the National Ambient
Air Quality Standards (NAAQS), which set limits on how much tropospheric ozone, particulate matter, carbon monoxide,
sulfur dioxide, nitrogen oxides, and lead are allowed in the atmosphere. The program also evaluates the risks associated
with hazardous air pollutants, also known as air toxics. ACE is an active participant in the U.S. Global Change
Research Program (USGCRP), the interagency Federal effort to improve scientific understanding of climate change and global change.
Beginning in FY2012, the following Research Programs will be integrated into the Air, Climate and Energy Research Program:
• Clean Air Research
• Global Change Research
• Biofuels Research (within the Sustainability Program)
• Mercury Research (within the Human Health and Ecosystems Program)
Authorizing Legislation
• CAA
• Clinger Cohen Act,
• Economy Act
• EISA
• ERDDA
• NCPA
• NEPA
• PPA
Other Programs under Goal 1
Other Programs from DOT