Mobile sources of emissions include the following categories:

• Civil Aviation
• Road Transportation (e.g. cars, light duty trucks, heavy duty trucks and buses, motorcycles, etc.)
• Railways
• Navigation
• Other transportation activities, (e.g., pipeline transport)

International Bunker Fuels: Navigation and civil aviation fuel emissions from international transport activities (i.e., bunker fuels) should be reported separately and excluded from the national totals.