Transportation’s Role in Greenhouse Gas Emissions

Greenhouse Gas SectorThe Transportation sector is the second largest contributor to greenhouse gas emissions in the United States. The majority of these emissions are carbon dioxide (CO2) resulting from the combustion of petroleum-based products (i.e. gasoline and diesel), but also include smog-forming compounds, particulate matter, and other air pollutants.

Sources of transportation-related greenhouse gas emissions include:

  • Passenger cars
  • Light-duty trucks
  • Commercial aircraft
  • Ships and boats
  • Trains

Reducing the use of petroleum-based products could reduce the emissions that impact air quality and public health.

Click here to learn more about the health impacts of transportation-related pollution.

Click here to find recent Case Studies for alternative fuels and technologies.

Emission Reduction Strategies for Transportation

Switch to Alternative or Renewable fuels

Check out EPA’s Green Vehicle Guide 


Find the Laws and Incentives for your state

Check out DOT’s Alternative Fuel Corridors

Conserve Fuel

Watch this short video for driving tips to improve your vehicle’s fuel economy.


Connect with Clean Cities

The U.S. Department of Energy’s Clean Cities program advances the nation’s economic, environmental, and energy security by supporting local actions to cut petroleum use in transportation.