| AADT |
Annual Average Daily Traffic |
| AASHTO |
American Association of State Highway and Transportation Officials |
| ACRP |
Airport Cooperative Research Program |
| ADT |
Average Daily Traffic |
| AEO |
Annual Energy Outlook |
| AFLEET |
Alternative Fuel Life-Cycle Environmental and Economic Transportation |
| CAFE |
Corporate Average Fuel Economy |
| CAPCOA |
California Air Pollution Control Officers Association |
| CARB |
California Air Resources Board |
| CCAP |
Center for Clean Air Policy |
| CE |
Categorical Exclusion |
| CEQ |
Council on Environmental Quality |
| CEQA |
California Environmental Quality Act |
| CFC |
Chlorofluorocarbon |
| CFL |
Compact Fluorescent Light |
| CH4 |
Methane |
| CMAQ |
Congestion Mitigation and Air Quality Improvement |
| CO |
Carbon Monoxide |
| CO2 |
Carbon Dioxide |
| CO2e |
Carbon Dioxide Equivalent |
| CS |
Cambridge Systematics |
| CURB |
Climate Action for Urban Sustainability |
| DDOT |
District of Columbia Department of Transportation |
| DEFRA |
Department for Environment, Food, and Rural Affairs |
| DelDOT |
Delaware Department of Transportation |
| DEQ |
Diesel Emissions Quantifier |
| DOE |
Department of Energy |
| DOT |
Department of Transportation |
| E3 |
Energy and Environmental Economics, Inc. |
| EA |
Environmental Assessment |
| EERPAT |
Energy and Emissions Reduction Policy Analysis Tool |
| EIS |
Environmental Impact Statement |
| EMFAC |
Emission Factor |
| EMS |
Environmental Management Systems |
| EPA |
Environmental Protection Agency |
| EPD |
Environmental Product Declaration |
| EPEAT |
Electronic Product Environmental Assessment Tool |
| ESCO |
Energy Service Company |
| EV |
Electric Vehicle |
| EVSE |
Electric Vehicle Supply Equipment |
| FHWA |
Federal Highway Administration |
| GASCAP |
Greenhouse-Gas Assessment Spreadsheet for Capital Projects |
| GGRP |
Greenhouse Gas Reduction Act Plan |
| GHG |
Greenhouse Gas |
| GIS |
Geographic Information System |
| GPC |
Global Protocol for Community-Scale Greenhouse Gas Emission Inventories |
| GREET |
Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation |
| GUI |
Graphical User Interface |
| GWP |
Global Warming Potential |
| HC |
Hydrocarbons |
| HDVEC |
Heavy-Duty Vehicle Emissions Calculator |
| HERS |
Highway Economic Requirements System |
| HFC |
Hydrofluorocarbon |
| HFO |
Hydrofluoroolefin |
| HOT |
High-Occupancy Toll |
| HOV |
High-Occupancy Vehicle |
| HPMS |
Highway Performance Monitoring System |
| HVAC |
Heating, Ventilation, and Air Conditioning |
| ICCT |
International Council on Clean Transportation |
| ICE |
Infrastructure Carbon Estimator |
ICE |
Inventory of Carbon and Energy |
| INVEST |
Infrastructure Voluntary Evaluation Sustainability Tool |
| IPCC |
Intergovernmental Panel on Climate Change |
| ITS |
Intelligent Transportation System |
| LDV |
Light-Duty Vehicle |
| LED |
Light-Emitting Diode |
| LEED |
Leadership in Energy and Environmental Design |
| LRTP |
Long-Range Transportation Plan |
| MAP-21 |
Moving Ahead for Progress in the 21st Century Act |
MassDOT |
Massachusetts Department of Transportation |
MCCC |
Maryland Commission on Climate Change |
MDOT |
Maryland Department of Transportation |
| mmt |
Million metric tons |
| MnDOT |
Minnesota Department of Transportation |
| MOVES |
Motor Vehicle Emission Simulator |
| MPO |
Metropolitan Planning Organization |
| MSAT |
Mobile Source Air Toxics |
| MT |
Metric Ton |
| N2O |
Nitrous Oxide |
| NAS |
National Academy of Sciences |
| NASEM |
National Academies of Sciences, Engineering, and Medicine |
| NCEI |
National Centers for Environmental Information |
| NCHRP |
National Cooperative Highway Research Program |
| NEPA |
National Environmental Policy Act |
| NGO |
Nongovernmental Organization |
| NHS |
National Highway System |
NO2 |
Nitrogen Dioxide |
| NRC |
National Research Council |
| NRMCA |
National Ready Mixed Concrete Association |
| ORNL |
Oak Ridge National Laboratory |
| PaLATE |
Pavement Life-Cycle Assessment Tool |
| PBOT |
Portland Bureau of Transportation (Oregon) |
| PBPP |
Performance-Based Planning and Programming |
| PEV |
Plug-in Electric Vehicle |
| PM |
Particulate Matter |
| RAP |
Recycled Asphalt Pavement |
REC |
Renewable Energy Certificate |
RPAT |
Regional Policy Analysis Tool |
| RSPM |
Regional Strategic Planning Model |
| SCM |
Supplemental Cementitious Material |
| SEPA |
State Environmental Policy Act |
| SHRP 2 |
Strategic Highway Research Program 2 |
| SPR |
State Planning and Research |
STAC |
Sustainable Transportation Advisory Council (Minnesota DOT) |
| STIP |
Statewide Transportation Improvement Program |
| STS |
Statewide Transportation Strategy |
| TCAPP |
Transportation for Communities: Advancing Projects through Partnerships |
TCI |
Transportation and Climate Initiative |
| TDM |
Transportation Demand Management |
| TIP |
Transportation Improvement Program |
| TRB |
Transportation Research Board |
| TRIMMS |
Trip Reduction Impacts of Mobility Management Strategies |
| TSM&O |
Transportation Systems Management and Operations |
| USEEIO |
U.S. Environmentally-Extended Input-Output |
| U.S. GCRP |
U.S. Global Change Research Program |
| VMT |
Vehicle Miles Traveled |
| WARM |
Waste Reduction Model |
| WSDOT |
Washington State Department of Transportation |
| ZEV |
Zero-Emission Vehicle |