Transcript Updated Safety Margins for Mobile Emissions Budgets for the 2012 PM2.5 Redesignation Request and Maintenance Plan Transportation Planning Board September 19, 2012 Ronald Kirby Director, Department of.

Updated Safety Margins for Mobile
Emissions Budgets for the
2012 PM2.5 Redesignation Request
and Maintenance Plan
Transportation Planning Board
September 19, 2012
Ronald Kirby
Director, Department of Transportation Planning
09/19/2012
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Updated PM2.5 Safety Margins
• March 21, TPB letter to MWAQC requested safety
margins of 20 and 30 percent in mobile emissions
budgets for 2017 and 2025 respectively, to reflect
uncertainties in the future fleet age and mix, and EPA
mandated emissions models
• June 1, A sensitivity analysis conducted by TPB staff
showed the impact of an older fleet on PM2.5
emissions was actually lower in 2025 than in 2017
• July 31, In a conference call with the MWAQC Mobile
Budget Task Force, TPB staff proposed safety margins
of 20 percent for both 2017 and 2025, which was
accepted by the Task Force
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Fleet Aging
• A Consumer Reports article of August 2012 stated
that the fleet has been aging since 1995 due to
more durable vehicles
“The average age of all cars on the road is approaching 11 years, up from
about eight years in 1995…a decade ago cars weren’t as reliable and durable
as they are today. …[I]mprovements in rust prevention, engine technology,
and lubricants have been game changers, and now you can expect to keep any
car rolling into six-figure (miles) territory with proper care.”
• Aging of the vehicle fleet due to durability
factors, as well as short-term economic
conditions, underscores the importance of safety
margins in mobile emissions budgets for 2017
and 2025
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MAP-21 Provisions Affecting PM2.5 Emissions
• Use of Congestion Mitigation and Air Quality
Improvement Program (CMAQ) funds to
reduce fine particulate emissions:
“For any State that has a nonattainment or
maintenance area for fine particulate matter, an
amount equal to 25 percent of the funds…shall be
obligated to projects that reduce fine particulate
matter and emissions in such area, including
diesel retrofits.” Section 104(b)(4)
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Performance Management Planning
• MAP-21 introduced a new
performance based approach
in Section 150(d)
• Secretary will establish
performance measures
related to the national goals
• States, public transportation
providers, and MPOs will
establish targets for each of
the performance measures in
coordination with each other
• Progress toward targets will
be referenced in Plans and
TIPs
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Performance Management National Goals
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Safety
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Infrastructure Condition
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Congestion Reduction
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System Reliability
5 Freight Movement and Economic Vitality
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Environmental Sustainability
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Reduced Project Delivery Delays
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MAP-21 Performance Management Provisions
Affecting Air Quality Planning
• Each MPO representing a nonattainment or maintenance
area shall develop a performance plan that:
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Includes an area baseline level for traffic congestion and onroad mobile source emissions for which the area is in
nonattainment or maintenance;
Describes progress made in achieving the performance targets
described in Section 150(d);
Includes a description of projects identified for CMAQ
funding, and how such projects will contribute to achieving
emission and traffic congestion reduction targets.
Plans updated biennially, including a separate report that
assesses progress of the program of projects under the
previous plan in achieving air quality and traffic
congestion targets
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Questions?
Ronald Kirby
Director, Department of Transportation Planning
09/19/2012
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