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Air Quality

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The Air Quality topic describes a range of programs, policies, case studies, resources, and tools related to air quality impacts as they relate to surface transportation. Pollutants of concern from the surface transportation sector include volatile organic compounds, oxides of nitrogen, carbon monoxide, and particulate matter as well as air toxics and greenhouse gas emissions. Transportation planners work to address air quality issues at both the regional and project scales.

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Recent Developments

• Quick Guide Issued On Project-Level Air Quality Analyses
• CMAQ Performance Plan Guidebook Issued for MPOs
• Grants Available for Deployment of Advanced Transportation Technologies
• EPA Announces Clean Diesel Funding Availability for FY 2018
• FHWA Announces Advanced Transportation Technology Development Funds
• FTA Selects Projects for Low or No Emissions Grants
• FHWA Announces 2017 Alternative Fuel Corridor Designations
• Minnesota DOT Evaluates Traffic Estimates from Mobile Devices
• FHWA Report Displays Results of Regional Congestion Pricing Workshops
• Tech Brief Discusses In-Car Technology to Reduce Fuel Consumption

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Key Resources

• AASHTO Air Quality Community of Practice and State of the Practice Reports
• FHWA Air Quality Program website
• FHWA Transportation Conformity Resources
• FHWA Congestion Mitigation and Air Quality Improvement (CMAQ) Program information
• FHWA Air Toxics information
• EPA Transportation and Air Quality Information
• Air Quality Fundamentals Video Series (2016), Developed by TRB, FHWA and AASHTO.
• NCHRP 25-25, Task 89 - Establishing Representative Background Concentrations for Quantitative Hot-spot Analyses for Particulate Matter: Final Report, Case Studies, Power Point (2014)
• NCHRP 25-25, Task 78 - Programmatic Agreements for Project-Level Air Quality Analyses Using MOVES, CAL3QHC/R and AERMOD (2015): Project Description including Final Report, Appendix B: Programmatic Agreement Template, Appendix C, Technical Support Document Template, and Data Files

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