| Adaption | Changing behaviors or systems to reduce negative impacts |
| Balanced Mix Design | Use of performance tests to design pavement structure |
| Carbon Credit | Tradeable certificate used in carbon mitigation policy systems |
| Carbon Dioxide Equivalent | Measurement unit used to standardize climate impacts of greenhouse gases |
| Carbon Emissions | Carbon substances released into atmosphere |
| Carbon Footprint | Measurement of climate impact over a lifecycle |
| Carbon Neutrality | Net zero emission achieved through carbon offsets and elimination |
| Carbon Offsets | Purchasing of carbon credit to comply with emission caps |
| Carbonation | Permanent sequestration of carbon dioxide |
| Climate Change | Change in temperature, precipitation or wind for longer than 10 years |
| Corporate Social Responsibility | Business commitment to behave ethically in the workplace and community |
| Downstream Scope Three Emissions | Emissions (indirect) from use of company’s product |
| ENERGY STAR APEX Program | A program to reduce energy consumption and costs at asphalt facilities |
| Environmental Product Declaration | Details of a product’s environmental performance during its lifecycle |
| Environmental, Social & Governance | Three factors measuring corporate sustainability and ethical impact |
| e-Ticketing | Paperless electronic document on driver and load delivered |
| Fleet Management | Strategies for managing commercial vehicles |
| Fly Ash | Fines of a coal combustion product |
| Green Rating Systems | Framework of sustainable guidelines and metrics for design and construction |
| Greenhouse Gas | A gas that heats the earth because it absorbs infrared radiation |
| Greenwashing | Green public relations which are deceptive about a product, claims or policies |
| Intelligent Compaction | Compaction of road materials using rollers, computer, and GPS. |
| Intergovernmental Panel on Climate Change | Organization assessing scientific and technical literature on climate change |
| International Roughness Index | Mathematical measurement of road’s smoothness |
| Kyoto Protocol | 1997 treaty where nations detailed emission reduction targets for first time |
| Landfill-free | At least 90% of operational waste is reused, recycled or converted to energy |
| Life Cycle Assessment | Environmental assessment method evaluating all stage of a life cycle |
| Open-Graded Friction Course | Thin permeable asphalt layer |
| Our Common Future | The 1987 UN report which defined sustainable development |
| Ozone Layer | Region of Earth’s stratosphere that absorbs most of the sun’s radiation |
| Paris Climate Agreement | 2015 treaty on climate change to mitigate, adapt and finance CO2 reductions |
| Perpetual Pavement | Long-lasting structural design and construction of asphalt |
| Porous Pavement | Product designed to allow water to move through the asphalt layer |
| Product Category Rules | Product category-specific requirements for conducting a life cycle assessment |
| Quality Assurance | Method to prevent mistakes in manufactured products and ensure quality |
| Reclaimed Asphalt Pavement | Reprocessed pavement containing asphalt and aggregate |
| Recycled Asphalt Shingles | Reprocessed shingles containing a stiff binder and aggregate fines |
| Recycling | The collection and reprocessing of a resource for reuse |
| Renewable Energy | Electricity supplied from renewable sources |
| Resilience | The ability to anticipate, prepare for, and adapt to changing conditions |
| Rolling Resistance | Force resisting a tire’s motion |
| Scope One Emissions | Emissions from company-owned and controlled resources |
| Scope Two Emissions | Emissions (indirect) from a company’s purchase of generated power |
| Sequestration | Storage or removal of carbon dioxide within a product |
| Slag | Stony ore waste, a byproduct of smelting |
| Smoothness | Pavement quality that ensures high driver satisfaction |
| Speed of Construction | Quick construction techniques, practices, and materials for satisfaction |
| Stone Matrix Asphalt | Gap-graded mixture designed for rut resistance and durability |
| Sustainable | Meeting present needs while ensuring future generations can too |
| Thinlay | Pavement preservation technique that adds 3/4- to 1 1/2 inches of structure |
| Triple Bottom Line | Balancing environmental, economic, and social impacts |
| United Nations Sustainable Development Goals | Call for countries to tackle climate action, life and justice issues |
| Upstream Scope Three Emissions | Emissions (indirect) of products used in the manufacturing of a pavement |
| Variable Frequency Drive | Type of motor drive |
| Warm Mix Asphalt | Technologies that allow for production at lower temperature |
| Wildlife Habitat | Wildlife areas that provide opportunities for food, water, and nesting |
| Zero Waste | System-wide approach maximizing recycling and reducing waste/consumption |
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