SmartWay Program
The website of the EPA's SmartWay program, which helps companies advance supply chain sustainability by measuring, benchmarking and improving freight transportation efficiency....
National Emissions Inventory
The National Emissions Inventory (NEI) is a comprehensive and detailed estimate of air emissions of criteria pollutants, criteria precursors, and hazardous air pollutants from air emissions sources. T...
Idling Reduction Technologies (IRTs) for Trucks and School Buses
A site containing an overview of idling reduction technologies and an EPA verified list of technical approaches.
Clean School Bus
This website provides information and resources related to EPA's Clean School Bus, a national program designed to help communities reduce emissions from older diesel school buses. ...
Midterm Evaluation of Light-Duty Vehicle Greenhouse Gas (GHG) Emissions Standards for Model Years 2022-2025
As a part of this Midterm Evaluation, EPA is examining a wide range of factors, such as developments in powertrain technology, vehicle electrification, light-weighting and vehicle safety impacts, the ...
Summary of the Clean Air Act
This webpage presents information on the Clean Air Act, the comprehensive federal law that regulates air emissions from stationary and mobile sources. Among other things, this law authorizes EPA to es...
How to Develop a Green Freight Program: A Comprehensive Guide and Resource Manual
A guide to the process of developing and establishing a green freight program, broken down into 5 modules; Drivers for Green Freight Initiatives, Build Program Foundation, Create Program, Launch and I...
Motor Vehicle Emission Simulator (MOVES)
EPA's Motor Vehicle Emission Simulator (MOVES) is an emission modeling system that estimates emissions for mobile sources at the national, county, and project level for criteria air pollutants, greenh...
National Port Strategy Assessment
This national scale assessment was developed to examine current and future emissions from a variety of diesel sources operating in port areas, and to explore the potential of a range of available stra...
Emission Factors for Greenhouse Gas Inventories
This spreadsheet provides emission factors for a range of stationary and mobile fuel types, among other polluting entities.
Health Assessment Document for Diesel Engine Exhaust
This assessment examines information regarding possible health hazards associated with exposure to diesel engine exhaust, focusing on chronic and acute health hazards. ...