Air Quality Motor Vehicles

Motor Vehicles

Motor vehicle are Washington's main source of air pollution. They cause more than half of our air pollution statewide. This pollution causes cancer, asthma, and other health problems. More than 50 percent of Washington’s residents suffer from at least one medical condition that is made worse by air pollution.

Motor vehicles also produce more than half of the greenhouse gas emissions in our state. Greenhouse gases cause climate change. Effects of climate change in Washington include reduced snow pack, low summer stream flows, more winter flooding, increased coastal erosion, reduced water supplies for people and agriculture, and further loss of salmon habitat.

This web site provides information about programs that reduce air pollution from motor vehicles, including:

• Emission Testing
• Clean Cars
• Diesel Exhaust Programs
• No-idle Program
• Motor Vehicle Emissions Rule